(what are they worth?)I have around 100 of these. They have a 3 or 4 years warranty from Cooler Master and they sit here in my warehouse in Hong Kong (purchased from official distributor).
There is no packing but they are all nicely stacked away in plastic containers (6 in a box if I remember correctly).
Preferably looking for a local buyer in Hong Kong.
If you are not in Hong Kong, shipping will be rather complicated and I'll need at least a week or two to get them out the door (need to buy packing material and other stuff).
http://www.coolermaster-usa.com/product.php?product_id=3108&product_name=Silent%20Pro%20M2%20850W
Cooler Master Silent Pro M2 850W
RS850-SPM2D3-US; RS-850-SPM2
They are 12V single rail.
Other Specs
Model RS850-SPM2D3-US; RS-850-SPM2
Type Intel Form Factor ATX 12V V2.3
Dimension 150 x 180 x 86mm
5.9 x 7.1 x 3.4 inch
Input Voltage 90-264Vac (Auto Range)
Input Current 11 – 5.5A
Input Frequency Range 47 - 63Hz
PFC Active PFC (>0.9)
Power Good Signal 100-500ms
Hold Up Time >17ms
Efficiency 80 Plus Silver
MTBF 100,000 Hours
Protection OVP/UVP/OCP/OPP/OTP/SCP
Output Capacity 850W
Operation Temperature 0~40°C (Nominal Input Voltage)
Regulatory TUV / CE / UL / FCC / BSMI / GOST / C-tick / KC / CCC
Fan 135mm Hydraulic Dynamic Bearings
Certification 80 Plus Silver
Connector M/B 24 Pin Connector x 1
CPU 8 Pin x 2
PCI-E 8 Pin x 3
PCI-E 6+2 Pin x 3
SATA x 12
4 Pin Peripheral x 5
4 Pin Floppy x 1
Warranty 5 years
UPC Code 884102014543