Acer Veriton VX275-UD5701W (PS.VAM03.017) Pentium dual-core E5700(3.00GHz) 1GB DDR3 160GB HDD Capacity Intel GMA X4500 Windows 7 Professional 32-bit

This is a pretty nice system considering the size and price. You can add RAM easily. Problem is, there are only two slots and a limit of 4GB. I recommend the Kingston KAC-VR313/2G, but probably any brand will do. There's a serial port on the back and...

Low cost ; Small form factor ; Good for business ; The RAM slots are easily accessible. You can add another stick of RAM in seconds ; Tons of USB ports, especially when you consider that the optical mouse and good quality keyboard both use PS/2 ; The...

Only VGA video output ; Limited expansion (still good considering its size) ; It's too cramped around the back of the optical drive. The power and SATA cables are bent upwards slightly since the ATX power cable is connected to the motherboard right...