When a USB keyboard is connected to the SWG 84xx (8450/8490) series appliance, your typing may either generate errors, or is not recognized at all. You would like to know if the Symantec Web Gateway (SWG) support the use of a USB keyboard.
atkbd.c: Unknown key pressed (translated set2, code 0x0 on isa0060/serio0).
atkbd.c: Use 'setkeycodes 00 <keycode>' to make it known.
SWG 8450 and 8490 do not support the use of a USB keyboard.
For Symantec Web Gateway 8450 and 8490, a PS/2 keyboard is required.
Symantec Web Gateway 8450 Rev 1 does support USB keyboads.