What is the Sandstone QFP400-SR8-0E6M-100M?
The Sandstone QFP400-SR8-0E6M-100M is a QSFP optical transceiver module, listed by the manufacturer as "400G QSFP-DD SR8, MPO16 connector". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.