User:CableCat

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This user has been on Wikipedia for 19 years, 2 months and 21 days.

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This user is a Computer System Administrator.

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Denne bruger har dansk som modersmål.

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Base 10 vs base 12

Fraction	Positional representation	Positional representation	Fraction
Decimal base		Duodecimal base
1/2	0.5	0.6	1/2
1/3	0.3	0.4	1/3
1/4	0.25	0.3	1/4
1/5	0.2	0.2497	1/5
1/6	0.16	0.2	1/6
1/7	0.142857	0.186A35	1/7
1/8	0.125	0.16	1/8
1/9	0.1	0.14	1/9
1/10	0.1	0.12497	1/A
1/11	0.09	0.1	1/B
1/12	0.083	0.1	1/10
1/13	0.076923	0.0B	1/11
1/14	0.0714285	0.0A35186	1/12

Ethernet splitter pinouts

Based on: Power_over_Ethernet#Pinouts

10/100 Mb/s ethernet splitter
Passtrough switch port	Pais in cable	Passtrough device	10/100 mode A, mixed DC & data
White/orange stripe	White/orange stripe	White/orange stripe	Rx +	DC +
Orange solid	Orange solid	Orange solid	Rx −	DC +
White/green stripe	White/green stripe	White/green stripe	Tx +	DC −
Blue solid		Blue solid	Unused
White/blue stripe		White/blue stripe	Unused
Green solid	Green solid	Green solid	Tx −	DC −
White/brown stripe		White/brown stripe	Unused
Brown solid		Brown solid	Unused
Extra switch port	Pais in cable	Extra device	10/100 mode A, mixed DC & data
White/orange stripe	Blue solid	White/orange stripe	Rx +	DC +
Orange solid	White/blue stripe	Orange solid	Rx −	DC +
White/green stripe	White/brown stripe	White/green stripe	Tx +	DC −
Blue solid		Blue solid	Unused
White/blue stripe		White/blue stripe	Unused
Green solid	Brown solid	Green solid	Tx −	DC −
White/brown stripe		White/brown stripe	Unused
Brown solid		Brown solid	Unused

Twisted pair ethernet variants

Name	Standard (IEEE 802.3 clause number)	Speed (Mbit/s)^[A]	Pairs required	Lanes per direction	Data rate efficiency (bit/s/Hz)^[B]	Line code	Symbol rate per lane (MBd)	Bandwidth (MHz)^[C]	Max distance (m)	Cable^[D]	Cable rating (MHz)
10BASE-T	802.3i-1990 (CL14)	10	2	1	1	PE	10	10	100	Cat 3	16
100BASE-TX	802.3u-1995 (CL25)	100	2	1	3.2	4B5B MLT-3 NRZ-I	125	31.25	100	Cat 5	100
1000BASE‑T	802.3ab-1999 (CL40)	1,000	4	4	4	TCM 4D-PAM-5	125	62.5	100	Cat 5	100
2.5GBASE-T	802.3bz-2016 (CL126)	2,500	4	4	6.25	64B65B PAM-16 128-DSQ	200	100	100	Cat 5e	100
5GBASE-T	802.3bz-2016 (CL126)	5,000	4	4	6.25	64B65B PAM-16 128-DSQ	400	200	100	Cat 6	250
10GBASE-T	802.3an-2006 (CL55)	10,000	4	4	6.25	64B65B PAM-16 128-DSQ	800	400	100	Cat 6A	500

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