Seagate ST12550N/ND/W/WD, ST11950N/ND/W/WD manual ST11950W and ST12550W drives

ST11950 and ST12550 Installation Guide, Rev. D 25

Note. All single-ended terminators must be ANSI

SCSI-2 alternative 2 active terminators.

To install terminators, carefully insert the terminator’s pins firmly into the socket’s holes. Note that pin 1 on the pack is identified by a dot, a number one, or a notch.

To remove termination, remove the terminator packs by carefully pulling them out of their sockets.

ST11950W and ST12550W drives

ST11950W and ST12550W drives are equipped with permanently mounted IC terminators. This means you can either enable or disable termination using jumpers as described below.

To terminate ST11950W and ST12550W drives (enable termination), install a jumper on J4 pins 11 and 12 as shown in Figure 7.

To remove termination (disable termination), remove the jumper from J4 pins and 11 and 12.