Think of the on/off board a a "SCSI Terminator for the mother board". The serial electronics on the mother board need to "talk" to something --- either a modem board, or a (less complicated/less expensive to manufacture) on/off board. Duos which shipped from the factory without an internal modem had an on/off board installed in the slot. On 8/4/99 mikebellman wrote: >After reading the service manual for the Duo, It states that the Duo modem >can not be removed from the motherboard unless you install an "on/off" >board. Is there a benefit to removing the internal modem and if so, I >would need to get a replacement on/off board. Cheers, jeff ____________________________________________ Jeff Rothfus Saranac television ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> Dr. Bott LLC | Get a LapBottom with new �GRIPPIER� gripper pads! | http://www.drbott.com/prod/lapbot.html $23.00 Midwest Mac Parts <http://www.midwestmac.com> | After-market parts for Macs. Fix your ticking dock for $59 w/ trade-in of PS. 888-356-1104 PowerBook Guy is | Click here! Everything PowerBook! | http://www.powerbookguy.com
