QSFP-40G-PLR4 Arista 40G QSFP+ Transceiver, up to 10km over parallel SMF (4x10G LR up to 10km) MTP-12 New Promo! from 35000 /per Qty. contact us for availability This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available.