Sheet N-401-EN: NETA-CU08 lists SN5610 leaves, a 7U MPO-12 patch and an SN2201 by U, and NETB-CU08 mirrors that equipment on plane B

What this sheet shows

N-401-EN is the unit-cabinet elevation, drawn at 1:15. It shows a front elevation of NETA-CU08, a front elevation of NETB-CU08, and one side section captioned NETA-CU08 side section (front left, rear right). The table at the upper right is titled NETA-CU08 equipment (NETB-CU08 mirrors with plane B). The sentence under the top border states the cabinet once: 800 × 1200 × 2294 mm, 48U (46U usable). The NETA elevation carries the vertical dimension cabinet height 2294, and both fronts are dimensioned 800 wide. The side section prints cabinet depth 1200, posts 750, SN5610 796 and a rear dimension of 304. That border sentence also gives the switch depth as 796 mm including fan handles, names NVIDIA SN5xxx rail kit 930-9SKIT-00L0-00A as fitting post spacing 600–800 mm, and states how the cabinet is serviced: PSUs and fans are replaced from the rear, switches withdraw to the front. Beside each front, the U scale prints 48 at the top and the odd numbers from 47 down through 1. Units are mm.

What occupies the U

The table lists the occupied U in NETA-CU08, and the front elevation draws those devices on the same ranges. U2–U3 is NS-A-LG15 and U4–U5 is NS-A-LG16, each a North–south (NS) leaf, model SN5610, 26.9 kg. The LG15 compute rail leaves are CL-A-LG15-R1 on U8–U9, CL-A-LG15-R2 on U10–U11, CL-A-LG15-R3 on U12–U13 and CL-A-LG15-R4 on U14–U15, each an SN5610 at 26.9 kg. The LG16 compute rail leaves are CL-A-LG16-R1 on U18–U19, CL-A-LG16-R2 on U20–U21, CL-A-LG16-R3 on U22–U23 and CL-A-LG16-R4 on U24–U25, again SN5610 at 26.9 kg. U30–U36 is PP-NETA-CU08, role patch panel, model 7U MPO-12 APC 72/U, 28.0 kg. U38 is NOOB-NETA-CU08, role cabinet management switch, model SN2201, 7.41 kg. The elevation draws no device after U5 and before U8, after U15 and before U18, after U25 and before U30, or after U36 and before U38, and the table lists no device above U38. Note 3 states used 28U / free 18U in each unit cabinet, with U positions taken from this reference device table. The note's used 28U and free 18U add to 46, the usable count written as 48U (46U usable). The NETB front repeats the bands with plane-B IDs: NS-B-LG15, NS-B-LG16, CL-B-LG15-R1 through CL-B-LG15-R4, CL-B-LG16-R1 through CL-B-LG16-R4, PP-NETB-CU08 (7U MPO-12 APC 72/U) and NOOB-NETB-CU08. The table does not reprint those B rows; its title says NETB-CU08 mirrors with plane B.

Depth, PDUs, airflow and the front zone

Note 1 separates the cabinet depth from the rail. The front post is 100 mm behind the front door, and the rear post is 750 mm behind the front post, adjustable 600–800 mm. The SN5610 extends 46 mm behind the rear post, and 304 mm remains at the rear for power cords and fibre bend space. Those figures sum to the depth named in the note: 100 + 750 + 46 + 304 = 1,200. The side section prints cabinet depth 1200, posts 750, SN5610 796 and 304. Post spacing plus the extension is the switch depth: 750 + 46 = 796, the 796 mm including fan handles in the border sentence. The note says the 1,200 mm cabinet depth is not the rail dimension; the rail fits the post spacing. The border sentence names the kit that fits that 600–800 mm spacing: NVIDIA SN5xxx rail kit 930-9SKIT-00L0-00A. Note 2 places the PDUs 0U vertical at the rear, both sides. For an SN5610, PSU1/PSU2 go to PDU-A1/A2 and PSU3/PSU4 go to PDU-B1/B2, and at least two PSUs operating is marked FACT. For SN4600C / SN2201, PSU1 goes to A1 and PSU2 goes to B1. The table lists the SN2201 on U38 and lists no SN4600C. The side section draws PDU-B1 and PDU-B2 above PDU-A1 and PDU-A2, all as vertical bars at the rear, with air in at the front (left) and air out at the rear (right). Note 3 requires door perforation and blanking panels to follow the front-to-rear (C2P) airflow requirement, and it marks that product CONFIRM. Note 4 states that front withdrawal of switches needs 1,000 mm, and that at cabinets facing a fan wall the 1,050 mm front zone is shared in time with fan-wall service.

Status

The title block issues the drawing as Public Edition P2, number N-401-EN, sheet 19 of 30, dated 2026-10-05, scale 1:15, units mm. The sheet title is Network cabinet elevations: unit cabinets, and the line under it is NETA/NETB-CU08. The status line reads: reference design for study and evaluation — not for construction. The open mark on the sheet is note 3, product CONFIRM, on door perforation and blanking panels for the front-to-rear (C2P) airflow requirement. Note 2 marks at least two PSUs operating as FACT, on the SN5610 assignment of PSU1/PSU2 to PDU-A1/A2 and PSU3/PSU4 to PDU-B1/B2. The 600–800 mm post range is stated as a fit in the border sentence and as adjustable spacing in note 1; the sheet does not mark that range FACT. The sheet is part of the Public Edition P2 network reference design for the GPU hall reference.

Sheet guide — the devices on this drawing

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