Tom's Hardware > All Reviews > Peripherals > Monitors > Add A Monitor Using USB: Sitecom's VGA Adapter

Test System

1:04 PM - June 8, 2005 by Felix Laufer

Hardware
System	Toshiba SA50-543
Processor	Pentium M 715 - 1.5 GHz 1 MB L2 Cache
Motherboard	Intel 855 Chipset BIOS V1.20 04/28/2004
Memory	512 MB DDR/PC2700S, CL2.0 (Elpida)
Controller	Intel 82801DBM UltraATA Intel 82801 On-Board USB2
Primary Graphics Unit	Intel 82852 GM/E Shared
OS	Windows XP Home 5.1.2600 Service Pack 1
Drivers & Settings
Graphics Driver	6.14.10.3722 (Intel)
IDE Driver	IDE 5.1.2600.1106 (Microsoft) USB 5.1.2600.1243 (Microsoft)
DirectX-Version	9.0c
Resolution	1024x768, 16/32 Bit, 85 Hz

Quality Impressions

The adapter produces a crisp and flicker-free image, and its color quality is comparable to that of the primary output for both 16 bit and 32 bit color depths. This is in line with what we expected, since the maximum resolution is only 1024x768.

Display Speed In Windows

As soon as there is a lot of movement on the screen, however, the differences between the primary display and the USB-attached one become easy to identify. Depending on the intensity of the movement, pronounced discrepancies in the speed with which the screen refreshes can be perceived. This effect can be exacerbated by attaching additional USB devices.