What is the maximum distance supported by this transceiver module for single-mode fiber?

The maximum distance supported by this transceiver module for single-mode fiber is 10 km (6.2 mi).

What is the maximum data transfer rate of the StarTech.com 10 Pack HPE J4859C compatible SFP module?

The maximum data transfer rate of the StarTech.com 10 Pack HPE J4859C compatible SFP module is 1.25 Gbps.

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StarTech.com 10 Pack HPE J4859C Compatible SFP Module 1000BASE-LX - 1GbE Gigabit Ethernet Single Mode/Multi Mode Fiber Transceiver - 10km

With 1000Base-LX technology, enjoy up to 1000Mbps data transfer rate over optical fiber cable
1.25 Gigabit Ethernet Ethernet technology for increasing efficiency with the quicker transfer and sharing of information
Optical fiber cable compatible - Spans afar and provides speedy data transmission rates between servers and network components
For transmitting data at gigabit speed over hundreds of miles with little integrity loss, single-mode fiber optic is an ideal solution
SFP (mini-GBIC) is the single answer to all your desired and specified application execution needs
SFP (mini-GBIC) with optical network application/usage for reliability and maximum efficiency
Hot-pluggable form factor for added reliability and dependability