{"product_id":"msn2700-cs2f-nvidia-mellanox-sn2700-32-port-100gbe-qsfp28-switch-onyx-refurbished","title":"NVIDIA Mellanox MSN2700-CS2F SN2700 32x 100GbE QSFP28 Spectrum Switch — Onyx, P2C Airflow, Refurbished","description":"\u003cp\u003e\u003cstrong\u003eThe Onyx build with P2C airflow — the most common SN2700 in existing fabrics\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNVIDIA Mellanox MSN2700-CS2F \/ 920-9N101-00F7-0X4 — Spectrum SN2700, 32x 100GbE QSFP28, 1U\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"border-left: 3px solid #1e8f5e; background: #f7f8fa; padding: 10px 14px; margin: 14px 0;\"\u003e→ \u003cstrong\u003eCheck airflow first.\u003c\/strong\u003e P2C means air enters at the power-supply side and exhausts at the ports. If your rack pulls cold air in at the port side, you need a C2P unit such as the MSN2700-CS2ROS instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMellanox Part Number:\u003c\/strong\u003e MSN2700-CS2F\u003cbr\u003e\u003cstrong\u003eNVIDIA SKU:\u003c\/strong\u003e 920-9N101-00F7-0X4\u003cbr\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e 1U Open Ethernet switch with NVIDIA Onyx (MLNX-OS), 32 QSFP28 100GbE ports, 2 AC PSUs, x86 CPU, standard depth, P2C airflow, rail kit\u003c\/p\u003e\n\u003cp\u003eThe MSN2700-CS2F is the SN2700 NVIDIA sold with its own \u003cstrong\u003eOnyx\u003c\/strong\u003e (formerly MLNX-OS) network OS and P2C airflow. If you are adding to or sparing an Onyx-based SN2700 fabric, this is the like-for-like part.\u003c\/p\u003e\n\u003cp\u003eEvery port runs 10 to 100GbE, so the same switch works as a 100G spine or, with breakout cables, a 25G top-of-rack switch for up to 64 servers.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhich One Do I Need?\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003cth\u003eNetwork OS (as ordered)\u003c\/th\u003e\n\u003cth\u003eAirflow\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eMSN2700-CS2F\u003c\/strong\u003e — this listing\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Onyx\u003c\/td\u003e\n\u003ctd\u003eP2C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMSN2700-CS2R\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Onyx\u003c\/td\u003e\n\u003ctd\u003eC2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMSN2700-CS2FC\u003c\/td\u003e\n\u003ctd\u003eCumulus Linux\u003c\/td\u003e\n\u003ctd\u003eP2C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMSN2700-CS2RC\u003c\/td\u003e\n\u003ctd\u003eCumulus Linux\u003c\/td\u003e\n\u003ctd\u003eC2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMSN2700-CS2FO\u003c\/td\u003e\n\u003ctd\u003eONIE (no network OS)\u003c\/td\u003e\n\u003ctd\u003eP2C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMSN2700-CS2RO\u003c\/td\u003e\n\u003ctd\u003eONIE (no network OS)\u003c\/td\u003e\n\u003ctd\u003eC2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMSN2700-CS2ROS\u003c\/td\u003e\n\u003ctd\u003eONIE (no network OS)\u003c\/td\u003e\n\u003ctd\u003eC2P — a CS2RO variant not on NVIDIA's public ordering list\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eThe suffix is the order, not the hardware.\u003c\/strong\u003e Airflow is set by the fan and PSU modules; the network OS is software. Match airflow to your hot and cold aisles before anything else.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMSN2700-CS2F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNVIDIA SKU\u003c\/td\u003e\n\u003ctd\u003e920-9N101-00F7-0X4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Spectrum SN2700, 1U, standard depth, 19\" rack mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePorts\u003c\/td\u003e\n\u003ctd\u003e32x QSFP28, 10\/25\/40\/50\/56\/100GbE per port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax ports by speed\u003c\/td\u003e\n\u003ctd\u003e32x 100GbE · 64x 50GbE · 32x 40GbE · 64x 25GbE · 64x 10GbE (with splitter cables)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThroughput\u003c\/td\u003e\n\u003ctd\u003e6.4Tb\/s switching capacity (3.2Tb\/s one direction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePacket rate\u003c\/td\u003e\n\u003ctd\u003e4.76 Bpps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatency\u003c\/td\u003e\n\u003ctd\u003e300ns, cut-through\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePacket buffer\u003c\/td\u003e\n\u003ctd\u003e16MB, fully shared\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCPU \/ memory\u003c\/td\u003e\n\u003ctd\u003eIntel x86 dual-core 1.40GHz · 8GB DDR3 · 16GB or 32GB SSD depending on switch revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supplies\u003c\/td\u003e\n\u003ctd\u003e2x hot-swap AC, 1+1 redundant · 130W typical with passive cables (ATIS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFans\u003c\/td\u003e\n\u003ctd\u003e4x hot-swap, N+1 redundant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork OS (as ordered)\u003c\/td\u003e\n\u003ctd\u003eNVIDIA Onyx (formerly MLNX-OS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirflow\u003c\/td\u003e\n\u003ctd\u003eP2C (power-to-connector): air in at the PSU side, out at the ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e43.8 x 427.83 x 686.8mm (1.72 x 16.84 x 27in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e11.1kg with 2 PSUs (24.5lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifecycle\u003c\/td\u003e\n\u003ctd\u003eNVIDIA lists this switch family as End of Life (EOL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eRefurbished\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLifetime, backed by Resilient Tec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eSource: NVIDIA Spectrum SN2000 hardware user manual (\u003ca href=\"https:\/\/networking-docs.nvidia.com\/sn2000hw\/latest\/specifications\" target=\"_blank\" rel=\"noopener\"\u003especifications\u003c\/a\u003e, \u003ca href=\"https:\/\/networking-docs.nvidia.com\/sn2000hw\/latest\/ordering-information\" target=\"_blank\" rel=\"noopener\"\u003eordering information\u003c\/a\u003e) and the \u003ca href=\"https:\/\/www.nvidia.cn\/content\/dam\/en-zz\/Solutions\/networking\/br-sn2000-series.pdf\" target=\"_blank\" rel=\"noopener\"\u003eNVIDIA SN2000 series datasheet\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eNote on Throughput: 3.2Tb\/s or 6.4Tb\/s?\u003c\/h2\u003e\n\u003cp\u003eNVIDIA's datasheet quotes 3.2Tb\/s and its hardware manual quotes 6.4Tb\/s for the same switch. Both are right: 32 ports x 100GbE is 3.2Tb\/s in one direction and 6.4Tb\/s counting both directions. The switch is non-blocking either way.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eGood to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow must match the rack.\u003c\/strong\u003e P2C (power-to-connector) pulls air in at the power-supply side and exhausts at the ports; C2P is the reverse. NVIDIA color-codes the PSU and fan modules by airflow direction, so check them against the part number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4x25G breakouts cost a port.\u003c\/strong\u003e Per NVIDIA's manual, splitting a QSFP28 port into four 25GbE links disables (unmaps) the port directly below it. 2x50G splits do not. Plan cabling before you count ports.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40GbE look-alikes.\u003c\/strong\u003e Part numbers with B in place of C (for example MSN2700-BS2F) are the 40GbE version, not this 100GbE switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame hardware, different OS as ordered.\u003c\/strong\u003e Every 100GbE SN2700 in the table above is the same Spectrum hardware; the suffix records the OS it shipped with and the airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEOL platform.\u003c\/strong\u003e NVIDIA no longer sells new SN2000 systems. That is why refurbished units are the practical way to expand or spare an existing SN2700 fabric.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eQuick Checklist — Is This the Right Switch?\u003c\/h2\u003e\n\u003cp\u003eYou need 32 ports of 100GbE QSFP28 in 1U. Your rack has the \u003cstrong\u003epower-supply side\u003c\/strong\u003e on the cold aisle (P2C). You run, or are matching, an Onyx-based SN2700 fabric. You want dual hot-swap power supplies and hot-swap fans.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailability\u003c\/h2\u003e\n\u003cp style=\"border-left: 3px solid #1e8f5e; background: #f7f8fa; padding: 10px 14px; margin: 14px 0;\"\u003e\u003cstrong\u003eRefurbished and shipped from Resilient Tec in Knoxville, TN · Free standard shipping on US orders.\u003c\/strong\u003e\u003cbr\u003eNeed more than one, or a C2P unit for the other side of the row? Tell us how many ports you are building and we will quote switches and cabling together. \u003ca href=\"\/pages\/request-a-quote\"\u003e\u003cstrong\u003eRequest a quote →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e lifetime, \u003ca href=\"\/pages\/lifetime-warranty\"\u003ebacked by Resilient Tec\u003c\/a\u003e — not a manufacturer term. On switches that means advance replacement when we have one in stock, otherwise repair or replacement with an equivalent unit, from a named seller in the US.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eYou Might Also Need\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mcp1600-c001-mellanox-compatible-100g-qsfp28-passive-dac-cable-1m\"\u003eMCP1600-C001 100G QSFP28 passive DAC, 1 m\u003c\/a\u003e — switch-to-server or switch-to-switch inside the rack\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/100g-qsfp28-passive-dac-3m-reach-download-mellanox-compatibility-report-with-detailed-specifications\"\u003eMCP1600-C003 100G QSFP28 passive DAC, 3 m\u003c\/a\u003e — the next rack over\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mcp7f00-a002r30n-new-nvidia-100gbe-qsfp28-to-4x25gbe-sfp28-passive-breakout-dac-cable-2m\"\u003eNVIDIA MCP7F00-A002R30N 100G to 4x25G breakout DAC, 2 m\u003c\/a\u003e — one QSFP28 port to four 25GbE server links\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/100g-qsfp28-sr4-transceiver-850nm-100m-mpo-mellanox-compatible-mma1b00-c100d\"\u003eMMA1B00-C100D 100G QSFP28 SR4 transceiver\u003c\/a\u003e and \u003ca href=\"\/products\/mfa1a00-c003-mellanox-compatible-100g-qsfp28-active-optical-cable-3m\"\u003eMFA1A00-C003 100G AOC\u003c\/a\u003e — for runs past passive copper\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/pages\/product-guides\"\u003eProduct guides\u003c\/a\u003e — structured cabling, switches and the rest of the rack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated Guides\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/blogs\/news\/mellanox-sn2100-sn2700-port-split-25g-50g-breakout\"\u003ePort Splitting on Mellanox SN2100, SN2700 and SN2410: 4x25G and 2x50G Breakouts Without Losing a Port\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/blogs\/news\/qsfp28-breakout-cables-100g-to-4x25g-vs-4x10g-guide\"\u003eQSFP28 Breakout Cables: 100G to 4x25G vs 4x10G Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/blogs\/news\/dac-cable-no-link-fix-25g-100g-fec-mismatches-2026-guide\"\u003eDAC Cable No Link? Fix 25G\/100G FEC Mismatches (2026 Guide)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/blogs\/news\/100g-qsfp28-dac-cables-for-ai-homelab-clusters-the-connectx-cable-guide-2026\"\u003e100G QSFP28 DAC Cables for AI Homelab Clusters: The ConnectX Cable Guide (2026)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/network-switches-guide\"\u003eNetwork Switches Guide\u003c\/a\u003e\u003c\/p\u003e","brand":"NVIDIA","offers":[{"title":"Default Title","offer_id":68123351384164,"sku":"MSN2700-CS2F-R","price":2900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/3482\/4548\/files\/MSN2700-CS2F_1.jpg?v=1794407832","url":"https:\/\/resilient-tec.com\/products\/msn2700-cs2f-nvidia-mellanox-sn2700-32-port-100gbe-qsfp28-switch-onyx-refurbished","provider":"Resilient Tec","version":"1.0","type":"link"}