diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/gateway-connector-version-processor.abstract.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/gateway-connector-version-processor.abstract.ts
index 5f06659823..944b5ffe6c 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/gateway-connector-version-processor.abstract.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/gateway-connector-version-processor.abstract.ts
@@ -15,14 +15,14 @@
 ///
 
 import { GatewayConnector, GatewayVersion } from '@home/components/widget/lib/gateway/gateway-widget.models';
-import { isString } from '@core/utils';
+import { isNumber, isString } from '@core/utils';
 
 export abstract class GatewayConnectorVersionProcessor<BasicConfig> {
   gatewayVersion: number;
   configVersion: number;
 
-  protected constructor(protected gatewayVersionStr: string, protected connector: GatewayConnector<BasicConfig>) {
-    this.gatewayVersion = this.parseVersion(this.gatewayVersionStr);
+  protected constructor(protected gatewayVersionIn: string | number, protected connector: GatewayConnector<BasicConfig>) {
+    this.gatewayVersion = this.parseVersion(this.gatewayVersionIn);
     this.configVersion = this.parseVersion(connector.configVersion);
   }
 
@@ -45,11 +45,15 @@ export abstract class GatewayConnectorVersionProcessor<BasicConfig> {
   }
 
   private isVersionUpgradeNeeded(): boolean {
-    return this.gatewayVersionStr === GatewayVersion.Current && (!this.configVersion || this.configVersion < this.gatewayVersion);
+    return this.gatewayVersionIn === GatewayVersion.Current && (!this.configVersion || this.configVersion < this.gatewayVersion);
   }
 
-  private parseVersion(version: string): number {
-    return isString(version) ? Number(version.replace(/\./g, '')) : 0;
+  private parseVersion(version: string | number): number {
+    if (isNumber(version)) {
+      return version as number;
+    }
+
+    return isString(version) ? parseFloat((version as string).replace(/\./g, '').slice(0, 3)) / 100 : 0;
   }
 
   protected abstract getDowngradedVersion(): GatewayConnector<BasicConfig>;
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/modbus-version-processor.abstract.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/modbus-version-processor.abstract.ts
index abcf6ce597..6ea8f4516d 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/modbus-version-processor.abstract.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/modbus-version-processor.abstract.ts
@@ -29,10 +29,10 @@ import { ModbusVersionMappingUtil } from '@home/components/widget/lib/gateway/ut
 export class ModbusVersionProcessor extends GatewayConnectorVersionProcessor<any> {
 
   constructor(
-    protected gatewayVersionStr: string,
+    protected gatewayVersionIn: string,
     protected connector: GatewayConnector<ModbusBasicConfig>
   ) {
-    super(gatewayVersionStr, connector);
+    super(gatewayVersionIn, connector);
   }
 
   getUpgradedVersion(): GatewayConnector<ModbusBasicConfig_v3_5_2> {
@@ -47,7 +47,7 @@ export class ModbusVersionProcessor extends GatewayConnectorVersionProcessor<any
           ? ModbusVersionMappingUtil.mapSlaveToUpgradedVersion(configurationJson.slave as ModbusLegacySlave)
           : {} as ModbusSlave,
       },
-      configVersion: this.gatewayVersionStr
+      configVersion: this.gatewayVersionIn
     } as GatewayConnector<ModbusBasicConfig_v3_5_2>;
   }
 
@@ -62,7 +62,7 @@ export class ModbusVersionProcessor extends GatewayConnectorVersionProcessor<any
           : {} as ModbusLegacySlave,
         master: configurationJson.master,
       },
-      configVersion: this.gatewayVersionStr
+      configVersion: this.gatewayVersionIn
     } as GatewayConnector<ModbusLegacyBasicConfig>;
   }
 }
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts
index f55269eadf..351ad76494 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/mqtt-version-processor.abstract.ts
@@ -31,10 +31,10 @@ export class MqttVersionProcessor extends GatewayConnectorVersionProcessor<MQTTB
   private readonly mqttRequestTypeKeys = Object.values(RequestType);
 
   constructor(
-    protected gatewayVersionStr: string,
+    protected gatewayVersionIn: string,
     protected connector: GatewayConnector<MQTTBasicConfig>
   ) {
-    super(gatewayVersionStr, connector);
+    super(gatewayVersionIn, connector);
   }
 
   getUpgradedVersion(): GatewayConnector<MQTTBasicConfig_v3_5_2> {
@@ -67,7 +67,7 @@ export class MqttVersionProcessor extends GatewayConnectorVersionProcessor<MQTTB
     return {
       ...this.connector,
       configurationJson,
-      configVersion: this.gatewayVersionStr
+      configVersion: this.gatewayVersionIn
     } as GatewayConnector<MQTTBasicConfig_v3_5_2>;
   }
 
@@ -85,7 +85,7 @@ export class MqttVersionProcessor extends GatewayConnectorVersionProcessor<MQTTB
         ...updatedRequestsMapping,
         mapping: updatedMapping,
       },
-      configVersion: this.gatewayVersionStr
+      configVersion: this.gatewayVersionIn
     } as GatewayConnector<MQTTLegacyBasicConfig>;
   }
 
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/opc-version-processor.abstract.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/opc-version-processor.abstract.ts
index e0337d9fe3..e89c48fc28 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/opc-version-processor.abstract.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/abstract/opc-version-processor.abstract.ts
@@ -26,10 +26,10 @@ import { OpcVersionMappingUtil } from '@home/components/widget/lib/gateway/utils
 export class OpcVersionProcessor extends GatewayConnectorVersionProcessor<OPCBasicConfig> {
 
   constructor(
-    protected gatewayVersionStr: string,
+    protected gatewayVersionIn: string,
     protected connector: GatewayConnector<OPCBasicConfig>
   ) {
-    super(gatewayVersionStr, connector);
+    super(gatewayVersionIn, connector);
   }
 
   getUpgradedVersion(): GatewayConnector<OPCBasicConfig_v3_5_2> {
@@ -40,7 +40,7 @@ export class OpcVersionProcessor extends GatewayConnectorVersionProcessor<OPCBas
         server: server ? OpcVersionMappingUtil.mapServerToUpgradedVersion(server) : {},
         mapping: server.mapping ? OpcVersionMappingUtil.mapMappingToUpgradedVersion(server.mapping) : [],
       },
-      configVersion: this.gatewayVersionStr
+      configVersion: this.gatewayVersionIn
     } as GatewayConnector<OPCBasicConfig_v3_5_2>;
   }
 
@@ -50,7 +50,7 @@ export class OpcVersionProcessor extends GatewayConnectorVersionProcessor<OPCBas
       configurationJson: {
         server: OpcVersionMappingUtil.mapServerToDowngradedVersion(this.connector.configurationJson as OPCBasicConfig_v3_5_2)
       },
-      configVersion: this.gatewayVersionStr
+      configVersion: this.gatewayVersionIn
     } as GatewayConnector<OPCLegacyBasicConfig>;
   }
 }
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.html b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.html
index 584679fa2c..523705d029 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.html
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.html
@@ -84,7 +84,7 @@
       </mat-form-field>
     </div>
   </div>
-  <div class="tb-form-row column-xs" fxLayoutAlign="space-between center">
+  <div *ngIf="!hideNewFields" class="tb-form-row column-xs" fxLayoutAlign="space-between center">
     <div class="fixed-title-width" tb-hint-tooltip-icon="{{ 'gateway.hints.poll-period' | translate }}">
       <div tbTruncateWithTooltip>{{ 'gateway.poll-period' | translate }}</div>
     </div>
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.ts
index c838121b76..c000139ded 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-server-config/opc-server-config.component.ts
@@ -14,7 +14,7 @@
 /// limitations under the License.
 ///
 
-import { ChangeDetectionStrategy, Component, forwardRef, OnDestroy } from '@angular/core';
+import { AfterViewInit, ChangeDetectionStrategy, Component, forwardRef, Input, OnDestroy } from '@angular/core';
 import {
   ControlValueAccessor,
   FormBuilder,
@@ -39,6 +39,7 @@ import {
   SecurityConfigComponent
 } from '@home/components/widget/lib/gateway/connectors-configuration/security-config/security-config.component';
 import { HOUR } from '@shared/models/time/time.models';
+import { coerceBoolean } from '@shared/decorators/coercion';
 
 @Component({
   selector: 'tb-opc-server-config',
@@ -64,7 +65,11 @@ import { HOUR } from '@shared/models/time/time.models';
     SecurityConfigComponent,
   ]
 })
-export class OpcServerConfigComponent implements ControlValueAccessor, Validator, OnDestroy {
+export class OpcServerConfigComponent implements ControlValueAccessor, Validator, AfterViewInit, OnDestroy {
+
+  @Input()
+  @coerceBoolean()
+  hideNewFields: boolean = false;
 
   securityPolicyTypes = SecurityPolicyTypes;
   serverConfigFormGroup: UntypedFormGroup;
@@ -95,6 +100,12 @@ export class OpcServerConfigComponent implements ControlValueAccessor, Validator
     });
   }
 
+  ngAfterViewInit(): void {
+    if (this.hideNewFields) {
+      this.serverConfigFormGroup.get('pollPeriodInMillis').disable({emitEvent: false});
+    }
+  }
+
   ngOnDestroy(): void {
     this.destroy$.next();
     this.destroy$.complete();
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.html b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.html
index 5f8b25af9d..2296a472a4 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.html
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.html
@@ -20,7 +20,7 @@
     <ng-container [ngTemplateOutlet]="generalTabContent"></ng-container>
   </mat-tab>
   <mat-tab label="{{ 'gateway.server' | translate }}*">
-    <tb-opc-server-config formControlName="server"></tb-opc-server-config>
+    <tb-opc-server-config formControlName="server" [hideNewFields]="isLegacy"></tb-opc-server-config>
   </mat-tab>
   <mat-tab label="{{ 'gateway.data-mapping' | translate }}*">
     <div class="tb-form-panel no-border no-padding padding-top tb-flex fill-height">
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.ts
index 1a45e74c7a..c45eafcc67 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-basic-config.component.ts
@@ -63,6 +63,7 @@ import {
 export class OpcUaBasicConfigComponent extends GatewayConnectorBasicConfigDirective<OPCBasicConfig_v3_5_2, OPCBasicConfig_v3_5_2> {
 
   mappingTypes = MappingType;
+  isLegacy = false;
 
   protected override initBasicFormGroup(): FormGroup {
     return this.fb.group({
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-legacy-basic-config.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-legacy-basic-config.component.ts
index 12e05205a2..9458858cbf 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-legacy-basic-config.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/connectors-configuration/opc/opc-ua-basic-config/opc-ua-legacy-basic-config.component.ts
@@ -64,6 +64,7 @@ import { OpcVersionMappingUtil } from '@home/components/widget/lib/gateway/utils
 export class OpcUaLegacyBasicConfigComponent extends GatewayConnectorBasicConfigDirective<OPCBasicConfig_v3_5_2, OPCLegacyBasicConfig> {
 
   mappingTypes = MappingType;
+  isLegacy = true;
 
   protected override initBasicFormGroup(): FormGroup {
     return this.fb.group({
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/gateway-widget.models.ts b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/gateway-widget.models.ts
index b933ff1186..0f940e28ff 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/gateway/gateway-widget.models.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/gateway/gateway-widget.models.ts
@@ -131,7 +131,7 @@ export interface GatewayConnector<BaseConfig = ConnectorBaseConfig> extends Gate
 
 export interface GatewayVersionedDefaultConfig {
   legacy: GatewayConnector<ConnectorLegacyConfig>;
-  '3.5.1': GatewayConnector<ConnectorBaseConfig_v_3_5_2>;
+  '3.5.2': GatewayConnector<ConnectorBaseConfig_v3_5_2>;
 }
 
 export interface DataMapping {
@@ -189,7 +189,7 @@ export interface ConnectorSecurity {
 }
 
 export enum GatewayVersion {
-  Current = '3.5.1',
+  Current = '3.5.2',
   Legacy = 'legacy'
 }
 
@@ -197,11 +197,11 @@ export type ConnectorMapping = DeviceConnectorMapping | RequestMappingValue | Co
 
 export type ConnectorMappingFormValue = DeviceConnectorMapping | RequestMappingFormValue | ConverterMappingFormValue;
 
-export type ConnectorBaseConfig = ConnectorBaseConfig_v_3_5_2 | ConnectorLegacyConfig;
+export type ConnectorBaseConfig = ConnectorBaseConfig_v3_5_2 | ConnectorLegacyConfig;
 
 export type ConnectorLegacyConfig = ConnectorBaseInfo | MQTTLegacyBasicConfig | OPCLegacyBasicConfig | ModbusBasicConfig;
 
-export type ConnectorBaseConfig_v_3_5_2 = ConnectorBaseInfo | MQTTBasicConfig_v3_5_2 | OPCBasicConfig_v3_5_2;
+export type ConnectorBaseConfig_v3_5_2 = ConnectorBaseInfo | MQTTBasicConfig_v3_5_2 | OPCBasicConfig_v3_5_2;
 
 export interface ConnectorBaseInfo {
   name: string;
diff --git a/ui-ngx/src/assets/metadata/connector-default-configs/modbus.json b/ui-ngx/src/assets/metadata/connector-default-configs/modbus.json
index 96fb59dcf5..38bb44e036 100644
--- a/ui-ngx/src/assets/metadata/connector-default-configs/modbus.json
+++ b/ui-ngx/src/assets/metadata/connector-default-configs/modbus.json
@@ -1,5 +1,5 @@
 {
-    "3.5.1": {
+    "3.5.2": {
         "master": {
             "slaves": [
                 {
diff --git a/ui-ngx/src/assets/metadata/connector-default-configs/mqtt.json b/ui-ngx/src/assets/metadata/connector-default-configs/mqtt.json
index b3ba47215f..5b8b8dbd44 100644
--- a/ui-ngx/src/assets/metadata/connector-default-configs/mqtt.json
+++ b/ui-ngx/src/assets/metadata/connector-default-configs/mqtt.json
@@ -1,5 +1,5 @@
 {
-    "3.5.1": {
+    "3.5.2": {
         "broker": {
             "host": "127.0.0.1",
             "port": 1883,
diff --git a/ui-ngx/src/assets/metadata/connector-default-configs/opcua.json b/ui-ngx/src/assets/metadata/connector-default-configs/opcua.json
index eb33f9235e..c0ef993dd1 100644
--- a/ui-ngx/src/assets/metadata/connector-default-configs/opcua.json
+++ b/ui-ngx/src/assets/metadata/connector-default-configs/opcua.json
@@ -1,5 +1,5 @@
 {
-    "3.5.1": {
+    "3.5.2": {
         "server": {
             "url": "localhost:4840/freeopcua/server/",
             "timeoutInMillis": 5000,