CompTIA A+ Certification All-in-One Exam Guide, Exams 220-1001 & 220-1002

by Mike Meyers

The two types of metal bags offer shielding against EMI and RFI as well as ESD. These are the silvery bags (such as in Figure 1-8) you’ll see hard drives packed in, for example, and the black-and-silver woven bags you’ll sometimes see.