官網找不到DVR-S20LBK資料，網路都說2M buffer size 緩衝

DVR-S20L
http://www.pioneer-optical.eu/Produ...RW&ck=DVD%20RW#

DVR-S20BK
http://www.pioneer-optical.eu/Produ...0RW&ck=DVD%20RW

DVR-S19LBK
http://www.pioneer-optical.eu/Produ...0RW&ck=DVD%20RW

好像差不多耶