I suspect the 'a' refers to its design for australian markets ( ie: 240 volts). Otherwise it appears visually (via 2 downloaded images only ) the same as the pc-7000 .The pc-7100 also appears similar appart from a harddisk in place of one floppy drives. I bought 2 of 3 available at my local dump recycling centre (no manuals,disks or cables).Telephone lead works for keyboard! One won't start at all ,the other wants to boot but either the floppy drive is faulty or the old ms-dos 3.2 boot disk i used is incompatable and although text is visable the screen is dark (screen swap made no dif). Would like to know if i can add harddisk also. This is why i'm searching for manuals etc. ----- Original Message ----- From: "David Vohs" <netsurfer_x1(a)fastmailbox.net> To: <cctalk(a)classiccmp.org> Sent: Saturday, April 26, 2003 12:45 PM Subject: Re: sharp pc-7000a manual scans