Your search for "hpe xfp to sfp" revealed the following:
Juniper EX4400-EM-4S EX4400 Series 4x 10GB SFP+ Switch Module
SKU: NSB-7759
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
D-Link DXS-3227-TAA 24x 1GB RJ45 4x 1GB Combo SFP 1x XFP 2x Slot (TAA) Switch
SKU: NSB-0880
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco A900-IMA2Z ASR 900 2x 10GB SFP+ 2x 10GB XFP Router Module
SKU: NSH-4602
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Champion 10GSFP+E-LR 10GB BASE-LR 1310nm SMF SFP+ Transceiver
SKU: NSB-7005
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Champion 1000SFP10 1.25GB 1310nm 10km SMF SFP Transceiver
SKU: NSB-1176
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper EX-SFP-GE10KT13R15 1GB BASE-BX-U SMF SFP Transceiver
SKU: NSN-5740
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Extreme 16706T 48x 1 Gigabit SFP 4x 10 Gigabit SFP+ (TAA) Switch
SKU: NSB-4949
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco ONS-XC-10G-S1 ONS Family OC-192/STM-64/10GE 1310 SR XFP Transceiver
SKU: NSN-9588
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Extreme 16538T 24x 1G SFP 4x 1G Combo 4x 10G SFP+ (TAA) Switch
SKU: NSH-8230
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
HPE 654214-001 D6000 6GB SAS I/O Module
SKU: NSB-4030
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days