Your search for "QSFP-40G-SM4" revealed the following:

Dell QSFP-40G-SM4 77KC3 40GB BASE-SR4 850nm MMF QSFP+ Transceiver

SKU: NSB-5946
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 64.99



• Only 2 remaining
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NEW Dell QSFP-40G-SM4 77KC3 40GB BASE-SR4 850nm MMF QSFP+ Transceiver

SKU: NSN-0837
Condition: New
Shipping: Overnight Options
Warranty: 365 days

$ 68.99



• Only 2 remaining
Call if you need more