Greetings, I've got a TRGPro. I've not used the CF slot yet, but hope to in the future. The docs say the slot is "industry standard" CF and the Pro will handle memory and hard drive cards without a problem. Active devices such as ethernet, modems, wireless, etc. may require software on the Pro to work properly. I believe the website (www.trgpro.com) lists the currently supported CF cards. --[Lance]