From Amazon
Transcend 4GB CompactFlash 133 Memory Card (CF Card) Up to 50/20 MB/s, Supports Ultra DMA transfer mode 4 with MLC NAND Flash ideal for entry-level DSLRs TS4GCF133
Conrad Electronic
Transcend Standard 133x CompactFlash card 4 GB
Novatech
Transcend 4 GB CompactFlash - 1 Card - 133x Memory Speed