Gap pad/Putty pad identification and location

Follow the information in this section to identify their shape, location, and orientation of the various gap pads and putty pads used in SD665-N V3.

Water loop and GPU node — Gap pad/Putty pad identification and location​

Figure 1. Water loop and GPU node — Gap pad/Putty pad identification and location

Pad index	Pad type	Attached component	Pad orientation
1	Gap pad	Compute node water loop	Gray side facing outward
2	Gap pad	Compute node water loop	Gray side facing outward
3	Gap pad	Compute node water loop	Gray side facing outward
4	Putty pad	Compute node water loop	Both sides can be facing outward
5	Putty pad	Compute node water loop	Both sides can be facing outward
6	Gap pad	Compute node water loop	Gray side facing outward
7	Gap pad	Compute node water loop	Gray side facing outward
8	Gap pad	Compute node water loop	Gray side facing outward
9	Putty pad	GPU node water loop	Both sides can be facing outward
10	Putty pad	GPU node water loop	Both sides can be facing outward
11	Putty pad	GPU node water loop	Align pad cutout to the screw hole and opening on the water loop
12	Putty pad	GPU	Both sides can be facing outward
13	Putty pad	GPU	Both sides can be facing outward
14	Putty pad	GPU	Both sides can be facing outward
15	Phase change material (PCM)	GPU node water loop	Both sides can be facing outward Note A PCM jig is required for installing the PCM to GPU node water loop.
16	Putty pad	GPU	Both sides can be facing outward
17	Putty pad	GPU node water loop	Both sides can be facing outward
18	Putty pad	GPU node water loop	Align pad cutout to the screw hole and opening on the water loop
19	Putty pad	GPU node water loop	Both sides can be facing outward

Compute node components — Gap pad/Putty pad identification and location​

Table 1. Compute node components — Gap pad/Putty pad identification and location

Pad index	Pad type	Attached component	Pad orientation
20	Putty pad	OSFP module conduction plate	Align pad cutout to the screw hole and opening on the interface plate as shown in: Install the water loop Install the OSFP module and the network board (trained technician only)
21	Putty pad	OSFP module conduction plate
22	Putty pad	M.2 backplane assembly	Align pad cutout to the screw hole and opening on the interface plate as shown in Install an M.2 drive.
23	Putty pad	M.2 backplane assembly	Align pad cutout to the screw hole and opening on the interface plate as shown in Install the M.2 backplane assembly.
24	Putty pad	M.2 backplane assembly
25	Putty pad	M.2 backplane assembly
26	Putty pad	M.2 backplane assembly
27	Gap pad	Conduction plate for: U.2 7mm drive U.2 15mm drive U.3 15mm drive	Gray side facing outward
28	Gap pad	Drive cage for: U.2 7mm drive U.2 15mm drive U.3 15mm drive	Align pad cutout to the screw hole and opening on the interface plate as shown in Install a drive cage assembly
29	Putty pad	Conduction for U.3 7mm drive	Both sides can be facing outward
30	Gap pad	Drive cage for U.3 7mm drive	Align pad cutout to the screw hole and opening on the interface plate as shown in Install a drive cage assembly
31	Gap pad	E3.S drive conduction plate	Apply the adhesive side to the E3.S drive conduction plate, see Install an E3.s drive
32	Putty pad		Align pad cutout to the screw hole and opening on the interface plate as shown in Install an E3.s drive
33	Putty pad
34	Gap pad	E3.S drive cage	Apply the adhesive side to the water loop.

Pad index
35 VR 2.5 mm Putty Pad Both sides can be facing outward Attached to the VR conduction plate See: Install the system board Transfer the system board Install the water loop
36 VR 1.5mm Putty Pad Both sides can be facing outward Attached to the VR conduction plate See: Transfer the system board Install the water loop