Diagnostic aids 3-23USB HS Test Mode1. Select USB HS Test Mode from HARDWARE TESTS.2. Press until the appears next to the Port to be tested, and then press .3. Select the desired Test, and then press .To stop testing before completion, turn the printer off.Port Test Appears on the displayPort 0 Test JTest KTest SEO NAKTest PacketTest Force EnabledUSB High SpeedCertification Testing...Port 1 Test JTest KTest SEO NAKTest PacketTest Force EnabledUSB High SpeedCertification Testing...Port 2 Test JTest KTest SEO NAKTest PacketTest Force EnabledUSB High SpeedCertification Testing...Port 3 Test JTest KTest SEO NAKTest PacketTest Force EnabledUSB High SpeedCertification Testing...