Mac Pro (2013)

Mac Pro (Late 2013)
The 2013 Mac Pro (officially Mac Pro Late 2013 and nicknamed the "trash can") is an iconic cylindrical workstation known for its radical, compact design. Originally starting at $2,999, it packed Intel Xeon processors and dual GPUs into a distinctive, cooling-focused chassis.

Asking $350 or offer

From about this Mac:
Mac Pro (Late 2013)
Processor 3.7 GHz Quad-Core Intel Xeon E5
Memory: 12 GB 1866 MHz DDR3
Startup Disk Macintosh HD
Graphics AMD FirePro D3002 GB

Display Support
Connect up to:
Three dual-cable 5K displays
Six Thunderbolt displays
Storage
256GB
PCIe-based SSD
Configurable to 512GB or 1TB2

Audio
Combined optical digital audio output/analog line out minijack
3.5 mm headphone jack with headset support
HDMI port supports multichannel audio output
Built-in speaker
Connections and Expansion
4 USB 3
6 Thunderbolt 2
Dual Gigabit Ethernet
HDMI 1.4 Ultra HD
Wireless
802.11ac Wi-Fi wireless networking;3 IEEE 802.11a/b/g/n com