What is the Palo Alto Networks PAN-QSFP-40GBASE-LR4?
The Palo Alto Networks PAN-QSFP-40GBASE-LR4 is a QSFP optical transceiver module, listed by the manufacturer as "Palo Alto QSFP+ form factor, 40Gb LR4 optical transceiver, long reach 10Km, SMF, duplex LC, IEEE 802.3ba 40GBASE-LR4 compliant". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.