RM238 Series
Backplane
│
59
Table 21
Backplane specifications
Specification
Host Interface
OCuLink
Device Interface
SFF-8639 (U.2)
Hot-Swap
Yes, allows users to replace storage devices online
Display
LED indicates storage device status
Power LED
–
Off (Fault)
–
Blue on (Present)
Activity LED
–
Green on(Access)
–
Red on (Failure)
–
Red 1Hz blink (Rebuild)
–
Red 4Hz blink (Locate)
Environment Monitor
Temperature sensor TMP75 (U1)
Connector
1. 2 x SFF-8639 (U.2)
2. 2 x OCuLink
3. 1 x 4-pin ATX Mini-Fit power connector for +12V only
4. I x 4-pin I2C
Dimension (L x W x H)
77.0 x 34.0 x 2.4 (mm)
Material
FR4 6 layers
Figure 78
Backplane front view
A.
HDD_0
B.
HDD_1