These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] sys-apps/usbutils-0.71-r1  0 kB

Total size of downloads: 0 kB

localhost mre # lsusb
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 002: ID 07cc:0004 Carry Computer Eng., Co., Ltd SM/CF/PCMCIA Card Reader
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 002: ID 0840:0098 Argosy Research, Inc.
Bus 001 Device 001: ID 0000:0000

localhost mre # lspci
00:00.0 Host bridge: nVidia Corporation nForce2 AGP (different version?) (rev c1)
00:00.1 RAM memory: nVidia Corporation nForce2 Memory Controller 1 (rev c1)
00:00.2 RAM memory: nVidia Corporation nForce2 Memory Controller 4 (rev c1)
00:00.3 RAM memory: nVidia Corporation nForce2 Memory Controller 3 (rev c1)
00:00.4 RAM memory: nVidia Corporation nForce2 Memory Controller 2 (rev c1)
00:00.5 RAM memory: nVidia Corporation nForce2 Memory Controller 5 (rev c1)
00:01.0 ISA bridge: nVidia Corporation nForce2 ISA Bridge (rev a4)
00:01.1 SMBus: nVidia Corporation nForce2 SMBus (MCP) (rev a2)
00:02.0 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4)
00:02.1 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4)
00:02.2 USB Controller: nVidia Corporation nForce2 USB Controller (rev a4)
00:08.0 PCI bridge: nVidia Corporation nForce2 External PCI Bridge (rev a3)
00:09.0 IDE interface: nVidia Corporation nForce2 IDE (rev a2)
00:1e.0 PCI bridge: nVidia Corporation nForce2 AGP (rev c1)
01:06.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)
01:07.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11)
01:07.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11)
01:08.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 07)
01:08.1 Input device controller: Creative Labs SB Live! Game Port (rev 07)
01:09.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host Controller (rev 46)
01:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)