MB-6682 4 MB-668 Installation GuideBC-599/596RJ-45 Ethernet Connector (CN14)Pin Signal Pin Signal1 TX+ 5 N/C2 TX- 6 RX-3 RX+ 7 N/C4 N/C 8 N/CIDE Hard Drive ConnectorsIDE LS-120 Connector (CN15)Primary IDE Hard Drive Connector (CN16)Secondary IDE Hard Drive Connector (CN17)You can attach up to three Enhanced Integrated Device Electronicshard disk drives to the mainboard's internal controller. The main-board's IDE controller uses a PCI local-bus interface. This advanceinterface supports faster data transfer and allows the IDE harddrive to exceed 528 MB.Connecting the hard driveConnecting drives, their done in a daisy-chain fashion and requiresone of the three cables, depending on the drive size. 1.8" and 2.5"drives need one 44-pin to two 44-pin flat cable connector. 3.5"drives use one 44-pin to two 40-pin connector.Wire number 1 on the cable is normally red or blue, and the otherwires are usually gray.1. Connect one end of the cable to CN15, CN16 or CN17. Makesure that the red (or blue) wire corresponds to pin 1 on the con-nector, which is marked and connectors are slotted.2. Plug the other end of the cable to the Enhanced IDE hard drive,with pin 1 on the cable corresponding to pin 1 on the harddrives. (see your hard drive's documentation for the location ofthe connector).Connect a second drive as described above.continue to the next page