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Logitech MK345 Comfort Keyboard and Mouse Combo

I bought a keyboard and mouse combo from Costco. I thought it is a good deal.  $29.00 plus ECO Fee 0.5 , plus tax.  Some store price it at $66.77 plus shipping.

Logitech MK345 Comfort Keyboard and Mouse Combo / Logitech MK345 Wireless Desktop Keyboard and Mouse.


  • Full-size Keyboard.
  • Mouse in good size. Not a compact one.
  • Batteries are pre-installed.
  • Keyboard battery life is 36months. 2 X AAA batteries. ( Based on the support website, it is said 48 months, or 4 years. But I think 36 months is more conservative.)
  • Mouse Battery life is 18 months. 1 X AA battery.

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The first time to make the Raspberry Pi work

I power on the Raspberry Pi this morning. See pictures below.
The first look of the screen in text mode. Raspberry Pi is located on the lower right corner.

After the loading, I can enter startx to load a window.


Because it is the first time, I want to record the steps clearly.
First of all, I need the five important parts for make the bare board work.
USB keyboard and mouse.
Logitech USB mouse, M-BJ69


Microsoft Wired Keyboard 400v1.0
Prepared SD card. At least class4, 4GB.
Kingston sd4/4GB, class 4

HDMI or composite television, OR a monitor with DVI or HDMI input, and an HDMI/composite cable.
HDMI cable to connect my 42 inches TV
Micro USB power supply – make sure you use a good quality one, capable of providing at least 1A at 5V.
I use HTC cellphone power adapter. It is 5V 1A.
Ethernet LAN cable.
Normal LAN cable.

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Christmas gift is a set of Hardware

I bought the new hardware to upgrade my Desktop. Actually it is not an upgrade. It is almost brand new one.
I ordered them online with
Let me show you what I got.
31195 Palit Radeon HD 3870 512MB GDDR3 PCI-E DVI-I HDMI Video Card 1 $109.99 $109.99
24129 Antec Earthwatts 500W Power Supply ATX12V V2.2 Active PFC 80-PLUS 80MM Fan 1 $59.99 $59.99
19337 OCZ Platinum XTC REV.2 PC2-6400 2GB 2X1GB DDR2-800 CL4-4-4-15 240PIN DIMM Dual Channel Memory Kit 1 $44.99 $44.99
33181 Intel Pentium Dual Core E5200 Dual Core Processor LGA775 2.5GHZ 800FSB 2MB Retail Box 1 $99.99 $99.99
30574 Gigabyte EP43-DS3L ATX LGA775 P43 FSB 1600 OC 1PCI-E 2PCI DDR2 SATA2 HD Sound GBLAN Motherboard 1 $99.99 $99.99
Subtotal of these five items is $464.75.
And two days later I got one Harddrive $77.27 including tax.
I build my new desktop with six PC hardware parts. Total cost is $542.02

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Logitech EX110 Mouse problem

I have a set of Logitech EX110 keyboard & mouse set at home. I used it about 20 months.
From last month, I have a problem with the mouse.
When I make a single click on the left button, it works like double click. Not always, but very often. And also it happens randomly.
So I have nothing to do with it. I find a wired mouse to replace it.
Later I read a post has similar situation in Chinese.
OK. I have a small screw driver and sewing needle.
I open the mouse with screw driver.


Open the cap of the micro switch with sewing needle.
Clean the contact points by a copier paper. Cut a small piece of paper, fold it and put it in between of the points. Just rub couple times.
Assemble it and it works.

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