I should point out... I do have a stack of M series boxes (2108's) and I *THINK* they are all the A series power supply. They have not been refurbished yet for that reason and have just sat for years. If someone does get that one on ebay and needs parts, I might be able to help. I may be willing to trade a mint (and I really do mean MINT) 2113B for a (correspondingly mint) 2109B. I do have a single 2109B, but it's just not pretty enough (front panel too yellowed, etc.). J -----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Jay West Sent: Saturday, January 24, 2015 6:47 PM To: 'General Discussion: On-Topic and Off-Topic Posts' Subject: RE: HP 21MX Computer 2112A - so it's an M series... with the A version power supply. The A version power supply is pretty wonky, and parts for that are very difficult to find. Too bad it's not a B series :\ -----Original Message----- From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Noel Chiappa Sent: Saturday, January 24, 2015 6:39 PM To: cctalk at classiccmp.org Cc: jnc at mercury.lcs.mit.edu Subject: HP 21MX Computer For all you HP fans: http://www.ebay.com/itm/111471510213 Noel