Your search for "mfa1a00-e" revealed the following:
Mellanox MFA1A00-C100 100m 100GB QSFP28 Active Optical Cable
SKU: NSB-3126
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Mellanox MFA1A00-C005 5m 100GB QSFP28 Active Optical Cable
SKU: NSB-3145
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Nvidia Mellanox MFA1A00-C015 15m 100GB QSFP28 Active Optical Cable
SKU: NSB-3136
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Nvidia Mellanox MFA1A00-C015 15m 100GB QSFP28 Active Optical Cable
SKU: NSN-8621
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Nvidia Mellanox MFA1A00-C030 30m 100GB QSFP28 Active Optical Cable
SKU: NSN-8620
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Nvidia Mellanox MFA1A00-C030 30m 100GB QSFP28 Active Optical Cable
SKU: NSB-3135
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
nVidia Mellanox MCP1600-E001E30 1m (3ft) 100GB QSFP28 Passive DAC Cable
SKU: NSB-4592
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days