Ever since I went digital, I've been using the Numark D2 Director. It's their basic dual MP3 player. No bells and whistles. To store my music, I bought two identical MyBook external hard drives. They have served me well for many years. Recently, one of the hard drives is having an issue. It cannot be recognized by my laptop or any other device. When I bought them, I had read that the D2 required hard drives that need to be plughed in and have their own power. But now with the advancement in SSD drives, I would really like to go solid state. Anyone know of any issues I may run into? Also, is there a certain type of SSD I need to buy?