LG Electronics WH16NS40 16X Blu-ray/DVD/CD Multi compatible Internal SATA Rewriter Drive, BDXL, M-DISC Support, Black $59.99
Amazon has internal BD writer drive on sale. This is an internal drive and you need appropriate hardware (sata cable, pc). Although, you can combine it with sata-to-usb adapter, the same Amazon page has those options. This drive can be flashed too to read 4K UHD disks. Good luck!