Well, I don't like buying things blind, but maybe I'll not get skunked too badly. This is what it says about it:

Apple Power Mac G4 400mHz AGP Graphics Tower Model: M6921, Order Number: M7825LL/A, Machine ID: PowerMac3,1

Features:

Processor: 400mHz PowerPC 7400 v2.9 (G4)

RAM: 768MB RAM

Hard Drive: 20GB ATA Hard Drive.

Optical Drive: DVR Super Drive.

Other Drives: Iomega Zip 100

Graphics Card: ATI Rage 128 Pro w/16MB VRAM, DVI & VGA Connectors

Modem: 56k Modem.

Audio In: 1 - 3.5-mm analog input jack (16-bit 44.1 kHz sample rate)

Audio Out: 1 - 3.5-mm analog output jack, Built-in speaker (16-bit 44.1 kHz sample rate)

USB Ports: 2 - 12 MBit/s

Firewire Ports: 3 - 400 MBit/s (1 internal) (15W total power)

Ethernet: 10/100BASE-T (RJ-45)

Expansion Slots: 3 - 64-bit 33 MHz PCI, 1 - 2x AGP

Software/OS: Loaded with OS X 10.4 Tiger & factory software, ie: Safari, Mail, iTunes, iLife '08 + iMovie '06 (iMovie '08 not compatible) and Appleworks for Word Processing (No disks included).

DOES NOT INCLUDE: Airport Card, Bluetooth, Keyboard, Mouse or Monitor.

Sounds good, anyway.