Interconnects

Add QSFP-100G-CU1M Cisco Compatible, 100G QSFP28 Passive DAC Cable - 1m to the cart
Add Cisco QSFP-100G-LR4-S Compatible, 100G QSFP28 LR4 Transceiver — 10km SMF, LAN-WDM ~1310nm, Duplex LC to the cart
Add QSFP-100G-SR1.2 Cisco Compatible, 100G QSFP28 SR1.2 Transceiver - 100m to the cart
Add Cisco QSFP-100G-SR4-S Compatible, 100G QSFP28 SR4 Transceiver — 100m OM4 MMF, 850nm, MPO-12 to the cart
Add MCP7Y50-N001 Compatible 800G OSFP to 4x200G OSFP Breakout DAC Cable - 1M | NVIDIA / Mellanox to the cart
Add MCP7H50-H002R26 Compatible 200G QSFP56 to 2x100G QSFP56 Breakout DAC Cable - 2M | Mellanox / NVIDIA to the cart
Add MCP7H50-H001R30 Compatible 200G QSFP56 to 2x100G QSFP56 Breakout DAC Cable - 1M | Mellanox / NVIDIA to the cart
Add MFA1A00-C003 Compatible 100G QSFP28 Active Optical Cable (AOC) - 3M | Mellanox / NVIDIA to the cart
Add MFA2P10-A015 Mellanox Compatible, 25G SFP28 Active Optical Cable - 15M to the cart
Add MFA2P10-A010 Mellanox Compatible, 25G SFP28 Active Optical Cable - 10M to the cart
Add MCP1660-W001E30 Mellanox Compatible, 400G QSFP-DD Passive DAC Cable - 1m to the cart
Add MCP2M00-A001 Mellanox Compatible, 25G SFP28 Passive DAC Cable - 1m to the cart
Add MCP7F00-A003 Mellanox Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3m to the cart
Add MCP7F00-A001 Mellanox Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 1m to the cart
Add MCP1650-H002E26 Mellanox Compatible, 200G QSFP56 Passive DAC Cable - 2m to the cart
Add MCP1600-C003 Mellanox Compatible, 100G QSFP28 Passive DAC Cable - 3m to the cart
Add MCP1600-C001 Mellanox Compatible, 100G QSFP28 Passive DAC Cable - 1m to the cart
Add MMA1L10-CR Mellanox Compatible, 100G QSFP28 LR4 Transceiver - 10km to the cart
Add MMA1B00-C100.2 Mellanox Compatible, 100G QSFP28 SR1.2 Transceiver - 100m to the cart
Add MMA1T00-HS Mellanox Compatible, 200G QSFP56 HDR SR4 Transceiver - 100m to the cart
Add MMA1B00-E100 Mellanox Compatible, 100G QSFP28 EDR SR4 Transceiver - 100m to the cart
Add MMA1B00-C100D Mellanox Compatible, 100G QSFP28 SR4 Transceiver - 100m to the cart
Add SFP-10G-SR Cisco 10G Short Range, multimode transceiver, Cisco Original, New to the cart
Add SFP-10G-LR Cisco 10G Long Range, single-mode transceiver, Cisco Original, New to the cart
Add SFP-10G-SR Cisco 10G Short Range, multimode transceiver, Cisco Original, Refurbished to the cart
Add SFP-10G-LR Cisco 10G Long Range, single-mode transceiver, Cisco Original, Refurbished to the cart
Add MFA1A00-C010, Mellanox MFA1A00-C010 100GbE QSFP28 MMF Active Optical Cable (AOC) – 10 m to the cart
Add MFS1S00-H005E, Mellanox 200Gb/s QSFP56 Active Optical Cable – 5m to the cart
Add MFS1S50-H005E, Mellanox 200Gb/s QSFP56 Active Optical Cable – 5m to the cart
Add SFP-25G-SR-S, Cisco 25GBase SFP28 MM fiber Transceiver, Original Refurbished to the cart
Add QSFP-100G-LR4-S, Cisco QSFP-100G-LR4-S – 100GBASE-LR4 QSFP28 Transceiver Module, Original, Refurbished to the cart
Add QSFP-100G-LR4-S, Cisco QSFP-100G-LR4-S – 100GBASE-LR4 QSFP28 Transceiver Module, Original, New to the cart
Add Cisco SFP-10G-T-X 10GBASE-T SFP+ Transceiver, Refurbished to the cart
Add Cisco SFP-10G-T-X 10GBASE-T SFP+ Transceiver, New to the cart
Add Cisco GLC-SX-MMD 1000BASE-SX SFP Transceiver, New to the cart
Add Cisco QSFP-40G-SR4 40GBASE-SR4 QSFP+ Transceiver, New to the cart
Add Cisco QSFP-40G-SR4 40GBASE-SR4 QSFP+ Transceiver, Refurbished to the cart
Add Cisco SFP-H10GB-CU1M 10GBASE-CU SFP+ Direct-Attach Cable, Refurbished to the cart
Add Cisco SFP-H10GB-CU3M 10GBASE-CU SFP+ Direct-Attach Cable, New to the cart
Add Cisco SFP-H10GB-CU3M 10GBASE-CU SFP+ Direct-Attach Cable, Refurbished to the cart
Add Cisco QSFP-H40G-CU1M 40GBASE-CR4 QSFP+ Direct-Attach Cable, New to the cart
Add Cisco QSFP-H40G-CU1M 40GBASE-CR4 QSFP+ Direct-Attach Cable, Refurbished to the cart
Add Cisco GLC-TE 1000BASE-T SFP Transceiver, Refurbished to the cart
Add Cisco GLC-TE 1000BASE-T SFP Transceiver, New to the cart
Add QSFP-40/100-SRBD, Cisco Dual-Rate 40/100GBASE-SR BiDi QSFP28 Transceiver, Refurbished to the cart
Add Cisco QSFP-100G-CU1M Compatible 100G QSFP28 Passive DAC Twinax Cable - 1m to the cart
Add MCP1650-H001E30 Mellanox Compatible, 200G QSFP56 Passive DAC Cable - 1m to the cart
Add MCP1660-W002E30 NVIDIA/Mellanox Compatible 400Gb/s QSFP-DD Passive DAC Cable - 2m to the cart
Add MCP7Y00-N002 NVIDIA/Mellanox Compatible 800Gb/s OSFP to 2x400Gb/s OSFP Passive Breakout DAC Cable - 2m to the cart
Add QDD-400G-DR4-S Cisco Compatible 400GBASE-DR4 QSFP-DD PAM4 Transceiver - 500m to the cart
The Dirty Connector Problem: MPO Inspection and Cleaning

Contamination is the leading cause of fiber link failure, and one dirty position on an MPO ferrule presents as a...

My Optic Won't Link: Reading DOM and Working the Optical Loss Budget

Before replacing a transceiver, read its DOM. Transmit and receive power split a dead link into three buckets in under...

What Can You Actually Run on a 48GB NVIDIA A40? Measured Model Sizes and Tokens Per Second (2026)

One A40 48GB runs 27–34B models at 23–29 tokens/sec, fits a 70B at Q4 at 12–13.5 tokens/sec, and serves 1,705...

The Dirty Connector Problem: MPO Inspection and Cleaning

Contamination is the leading cause of fiber link failure, and one dirty position on an MPO ferrule presents as a failing module. The inspect-clean-inspect discipline, the right tools, what never to do, and the symptom patterns that should send you to the scope instead of the spares shelf.

My Optic Won't Link: Reading DOM and Working the Optical Loss Budget

Before replacing a transceiver, read its DOM. Transmit and receive power split a dead link into three buckets in under a minute. Per-lane readings, the loss budget arithmetic, and the failures DOM is blind to.

What Can You Actually Run on a 48GB NVIDIA A40? Measured Model Sizes and Tokens Per Second (2026)

One A40 48GB runs 27–34B models at 23–29 tokens/sec, fits a 70B at Q4 at 12–13.5 tokens/sec, and serves 1,705 tokens/sec of aggregate output on an 8B model at 100 concurrent requests. The measured numbers, the KV cache math behind the 72B cliff, and the three things an Ampere card cannot do.

Keith L.