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DE100 ATA 33 Install Guide

Removable ATA 33 Drive Enclosure

Receiving Frame Motherboard

Activity Select Jumper (JP39):

 Default setting is “A” to use the 

activity indicator light on the receiving frame. Set to “B” to use the drive 
activity light on the computer chassis.

Master/Slave Selection Jumper (J4A):

 Master Drive configuration 

(default). Forces master drive configuration on receiving frame. Change 
jumper to set slave drive configuration, or remove jumper to use unit ID 
select switch on receiving frame.

Master/Slave Connection (J6):

 Used for older model drives that do 

not support a Slave Present handshake signal at I/O connector Pin-39. 
When using two receiving frames, a connection between J6 may be 
required.

Remote Drive Activity (J7):

 Pins A & C are used for remote drive 

activity. All other pins are reserved.

Master/Slave Drive Selection

There are two ways to set the Master/Slave drive designation.

1.  

Use the factory-installed jumper on your IDE drive 

- In most 

cases, the drive will be factory configured as a Master IDE drive 
using a jumper plug on the drive itself. No configuration changes 
are required. For multiple drive configurations, it is necessary to set 
the first IDE drive as Master and the second IDE drive to Slave. This 
can be done by changing the jumper on the IDE drive itself (refer to 
the drive manufacturer documentation). This method Requires no 
additional configuration of the drive carrier circuit board.

2.  

Use the hard-wire connector J3 on the drive carrier  

 

circuit board

 - The Master/Slave drive selection can also be set by 

the receiving frame using either Jumper 4A located on the rear panel 
or by setting the unit ID select switch. These two methods require the 
fabrication of a cable (not provided). 

Figure 1: Drive Installation Assembly

Receiving 

Frame

Figure 2: Receiving Frame Motherboard (rear view)

Cable

Cover 

(provided)

Disk Drive 

(not included)

ID Select Cable

I/O Cable

Power Cable

#6-32 

Phillips Flat Hd. 

Screw

(6 total)

Drive Carrier

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