For sale is a Myarc or corcomp  RS232, interface card for the texas instruments Ti -printer and telephone  coupler.I had both at one time ,and sold one ,so this card could have the wrong label .I updated the information  because I seen one on   that showed me it could be the corcomp card with a myarc label I  placed on it at the time I had both cards  .It is in new like condition ,because it was purchased  for backup purposes back when I had my ti computer with the expansion box.Selling as used ,and not tested.I had purchased two extra hard to find cards back in the day. NO box no papers.If it is not myarc then it would be a cor-comp RS232 for  the ti-994A home computer  .Fit in the ti expansion box.I came across a few items i still had so i'm throwing them in. A teach yourself ti-basics cassette  tape ,Ti early reading cartridge and My old unisource catalogue from the 1980's i use to order my texas instruments software etc from.Also not pictured since i found it in my closet in a different look alike texas instruments card case ,a free in good condition original texas instruments php 1260 32k memory card  for use in the original  texas instruments php 1200 peripheral expansion box.So you get the value of two original card for the price of one.