Network Hardware

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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 C9300L-24P-4G-E, Cisco Catalyst C9300L-24P-4G-E – 24-Port PoE+ Switch with 4x 1G Uplink, Network Essentials, Refurbished to the cart
Add C9300L-24P-4X-E, Cisco Catalyst C9300L-24P-4X-E – 24-Port PoE+ Switch with 4x 10G Uplink, Network Essentials, Refurbished to the cart
Add C9300L-48P-4G-E, Cisco Catalyst C9300L-48P-4G-E – 48-Port PoE+ Switch with 4x 1G Uplink, Network Essentials, Refurbished to the cart
Add C9300L-48P-4X-E, Cisco Catalyst C9300L-48P-4X-E – 48-Port PoE+ Switch with 4x 10G Uplink, Network Essentials Refurbished to the cart
Add RUTX11300400, RUTX11 INDUSTRIAL CELLULAR ROUTER 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 Compatible Console Cable, 6ft. RS232, CAB-CONSOLE-USB-C to the cart
Add Cisco Compatible Console Cable, 6ft. RS232, CAB-CONSOLE-USB-RJ45 to the cart
Add Cisco Compatible DB9 to RJ45 Console Cable, 6 ft 72-3383-01 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 AIR-AP-BRACKET-1, Cisco Access Point Bracket, Refurbished to the cart
Add C9120AXI-B, Cisco Access Point, Refurbished to the cart
Add CAB-SPWR-30CM, Cisco 3750X/3850 Stack Power Cable, 30CM, Refurbished to the cart
Add 9300X-24Y-E, Cisco Catalyst 24-Port 25G/10G/1G SFP28 Switch, Refurbished to the cart
Add PWR-C1-715WAC-P, Cisco 3850/9200 / 9300 Platinum Power supply, Refurbished to the cart
Add ISR4331-SEC/K9, Cisco Integrated Services Router w/ SEC bundle, Refurbished to the cart
Add 8200L-1N-4T, Cisco Catalyst Edge Router, New to the cart
Add AIR-ACC1530-PMK1, Cisco AIR-ACC1530-PMK1= Standard Pole/Wall Mount Kit, New, NOB to the cart
Add QSFP-40/100-SRBD, Cisco Dual-Rate 40/100GBASE-SR BiDi QSFP28 Transceiver, Refurbished to the cart
Add QDD-400G-DR4-S Cisco Compatible 400GBASE-DR4 QSFP-DD PAM4 Transceiver - 500m to the cart
Add QDD-400G-SR8-S Cisco Compatible 400GBASE-SR8 QSFP-DD PAM4 Transceiver - 100m to the cart
Add 9300X-24Y-E, Cisco Catalyst 24-Port 25G/10G/1G SFP28 Switch, New, Smartnet Eligible to the cart
Add Cisco ISR4321/K9 4321 Integrated Services Router 2x Gigabit 50-100Mbps 2 NIM Slots - Refurbished to the cart

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The Dirty Connector Problem: MPO Inspection and Cleaning
The Dirty Connector Problem: MPO Inspection and Cleaning

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

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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
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
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.

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