However , the NUMBER@1 MB drive writes much more slowly to NUMBER@2 MB disks than does the NUMBER@2 MB drive , and it 's unable to perform a long -LRB- i.e. , thorough -RRB- format on a NUMBER@2 MB disk .

However , it is slower to write data on a NUMBER@2 MB disk with a NUMBER@1 MB Zip drive than with a NUMBER@2 MB Zip drive .
