Interconnects

Add Cisco GLC-SX-MMD 1000BASE-SX SFP Transceiver, Refurbished to the cart
Add MCP7H60-W002 NVIDIA/Mellanox Compatible, 400G QSFP-DD to 2x200G QSFP56 Passive Breakout DAC Cable - 2m to the cart
Add Cisco SFP-10G-T-X 10GBASE-T SFP+ Transceiver, New Compatible to the cart
Add SFP-25G-SR-S, Cisco 25GBase SFP28 MM fiber Transceiver, Original New to the cart
Add Cisco SFP-H10GB-CU1M 10GBASE-CU SFP+ Direct-Attach Cable, New to the cart
Add GLC-T Cisco SFP Transceiver Module, Refurbished to the cart
Add Cisco GLC-LH-SMD, single-mode 1000BASE-LX/LH SFP Transceiver, Cisco Original, Refurbished to the cart
Add NVIDIA MMA4Z00-NS Compatible 800G OSFP SR8 Finned-Top (IHS) Twin-Port Transceiver — Dual MPO-12/APC, for Quantum-2 QM9700/QM9790 to the cart
Add NVIDIA MMA4Z00-NS400 / 980-9I51S-00NS00 Compatible 400G OSFP SR4 Flat-Top (RHS) Transceiver — MPO-12/APC, 850nm MMF, for ConnectX-7 to the cart
Add NVIDIA MFP7E10-N005 5M Passive Multimode Fiber Cable — MPO-12/APC to MPO-12/APC to the cart
Add SFP-10G-LR Cisco 10G Long Range, single-mode transceiver, Cisco Compatible to the cart
Add Cisco QSFP-100G-CWDM4-S Compatible, 100G QSFP28 CWDM4 Transceiver — 2km SMF, 1271–1331nm, Duplex LC to the cart
Add JNP-100G-AOC-10M Juniper Compatible, 100G QSFP28 Active Optical Cable - 10m to the cart
Add JNP-100G-AOC-3M Juniper Compatible, 100G QSFP28 Active Optical Cable - 3m to the cart
Add SFP-25GE-DAC-1M Juniper Compatible, 25G SFP28 Passive DAC Cable - 1m to the cart
Add JNP-100G-4X25G-3M Juniper Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3m to the cart
Add JNP-100G-4X25G-1M Juniper Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 1m to the cart
Add JNP-100G-DAC-3M Juniper Compatible, 100G QSFP28 Passive DAC Cable - 3m to the cart
Add QFX-QSFP28-DAC-1M Juniper Compatible, 100G QSFP28 Passive DAC Cable - 1m to the cart
Add JNP-QSFP-100G-LR4 Juniper Compatible, 100G QSFP28 LR4 Transceiver - 10km to the cart
Add JNP-QSFP-100G-SR4 Juniper Compatible, 100G QSFP28 SR4 Transceiver - 100m to the cart
Add AOC-Q-Q-100G-10M Arista Compatible, 100G QSFP28 Active Optical Cable - 10m to the cart
Add AOC-Q-Q-100G-3M Arista Compatible, 100G QSFP28 Active Optical Cable - 3m to the cart
Add AOC-S-S-25G-15M Arista Compatible, 25GbE SFP28 Active Optical Cable - 15m to the cart
Add AOC-S-S-25G-10M Arista Compatible, 25GbE SFP28 Active Optical Cable - 10m to the cart
Add CAB-QD-QD-400G-1M Arista Compatible, 400G QSFP-DD Passive DAC Cable - 1m to the cart
Add CAB-S-S-25G-1M Arista Compatible, 25G SFP28 Passive DAC Cable - 1m to the cart
Add CAB-Q-4S-100G-3M Arista Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3m to the cart
Add CAB-Q-Q-100G-3M Arista Compatible, 100G QSFP28 Passive DAC Cable - 3m to the cart
Add CAB-Q-Q-100G-1M Arista Compatible, 100G QSFP28 Passive DAC Cable - 1m to the cart
Add QSFP-100G-LR4 Arista Compatible, 100G QSFP28 LR4 Transceiver - 10km to the cart
Add QSFP-100G-BIDI Arista Compatible, 100G QSFP28 BiDi Transceiver - 150m to the cart
Add QSFP-200G-SR4 Arista Compatible, 200G QSFP56 SR4 Transceiver - 100m to the cart
Add QSFP-100G-SR4 Arista Compatible, 100G QSFP28 SR4 Transceiver - 100m to the cart
Add QSFP-100G-AOC10M Cisco Compatible, 100G QSFP28 Active Optical Cable - 10m to the cart
Add QSFP-100G-AOC3M Cisco Compatible, 100G QSFP28 Active Optical Cable - 3m to the cart
Add SFP-25G-AOC15M Cisco Compatible, 25GbE SFP28 Active Optical Cable - 15m to the cart
Add SFP-25G-AOC10M Cisco Compatible, 25GbE SFP28 Active Optical Cable - 10m to the cart
Add CBL-25GSFP28-DO-1M Dell Compatible, 25G SFP28 Passive DAC Cable - 1m to the cart
Add 470-ABQD Dell Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 3m to the cart
Add 470-ABQB Dell Compatible, 100G QSFP28 to 4xSFP28 Passive Breakout DAC Cable - 1m to the cart
Add DAC-Q28-100G-3M Dell Compatible, 100G QSFP28 Passive DAC Cable - 3m to the cart
Add DAC-Q28-100G-1M Dell Compatible, 100G QSFP28 Passive DAC Cable - 1m to the cart
Add 407-BBQL Dell Compatible, 100G QSFP28 LR4 Transceiver - 10km to the cart
Add 407-BCQN Dell Compatible, 100G QSFP28 SR4 Transceiver - 100m to the cart
Add QSFP-DD-400G-CU1M Cisco Compatible, 400G QSFP-DD Passive DAC Cable - 1m to the cart
Add SFP-H25GB-CU1M Cisco Compatible, 25G SFP28 Passive DAC Cable - 1m to the cart
Add QSFP-4SFP25G-CU3M Cisco Compatible, 100G QSFP28 to 4xSFP25G Passive Breakout DAC Cable - 3m to the cart
Add QSFP-4SFP25G-CU1M Cisco Compatible, 100G QSFP28 to 4xSFP25G Passive Breakout DAC Cable - 1m to the cart
Add QSFP-100G-CU3M Cisco Compatible, 100G QSFP28 Passive DAC Cable - 3m 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.