Proizvod Cena Količina Ukupno
× Slušalice sa mikrofonom Sandberg 3.5mm SJ 825-30 Slušalice sa mikrofonom Sandberg 3.5mm SJ 825-30
Šifra: DC25605
1.724,13 rsd
1.724,13 rsd
× LAN switch Intellinet 530378 10/100/1000 5port/metalni LAN switch Intellinet 530378 10/100/1000 5port/metalni
Šifra: DC38068
2.533,65 rsd
2.533,65 rsd
× Kuciste Everest Saber 250W Akrilna stranica, M-ATX/RGB strip Kuciste Everest Saber 250W Akrilna stranica, M-ATX/RGB strip
Šifra: DC41369
3.693,96 rsd
3.693,96 rsd
× stalak za slusalice Stalak za slusalice Fantech AC304 Tower II crni
Šifra: 206273
1.914,00 rsd
1.914,00 rsd
× Slusalice Oxpower OXP-044 3.5 mm crne Slusalice Oxpower OXP-044 3.5 mm crne
Šifra: 207626
550,60 rsd
550,60 rsd
× zvucnici za racunar Laptop zvucnici Fantech GS301 Trifecta crni
Šifra: 92137
5.757,00 rsd
5.757,00 rsd
× Rukavice za touch screen Kyncilor sive L Rukavice za touch screen Kyncilor sive L
Šifra: 210749
1.514,15 rsd
3.028,29 rsd
× Ranac POSO AP-37, 10" crni Ranac POSO AP-37, 10" crni
Šifra: 208378
3.200,35 rsd
3.200,35 rsd
× Power bank Oxpower 40000 mAh bela Power bank Oxpower 40000 mAh bela
Šifra: 92248
4.191,84 rsd
4.191,84 rsd
× Ranac za laptop do 15.6" crni Ranac za laptop do 15.6" crni
Šifra: 202897
1.798,05 rsd
1.798,05 rsd
× Miš USB Sandberg Flex Cover 6D 640-28 Miš USB Sandberg Flex Cover 6D 640-28
Šifra: DC40902
2.398,00 rsd
2.398,00 rsd
× NB Apple MacBook Air M3 8C/8GB/512GB 15.3 2880X1864/macOS/Midnight/+a/MRYV3LL/A NB Apple MacBook Air M3 8C/8GB/512GB 15.3 2880X1864/macOS/Midnight/+a/MRYV3LL/A
Šifra: DC44831
138.879,00 rsd
138.879,00 rsd
× LAN MK TP-Link Archer TX20U NANO AX1800 WiFi/dual band/USB LAN MK TP-Link Archer TX20U NANO AX1800 WiFi/dual band/USB
Šifra: DC42630
3.805,38 rsd
3.805,38 rsd
× SVGA AFOX GT730 4GB DDR3 128bit DVI/HDMI/VGA/LP, AF730-4096D3L6 SVGA AFOX GT730 4GB DDR3 128bit DVI/HDMI/VGA/LP, AF730-4096D3L6
Šifra: DC42389
7.141,02 rsd
7.141,02 rsd
× Konzola za igranje mini 80 crna Konzola za igranje mini 80 crna
Šifra: 75996
791,49 rsd
791,49 rsd
× NB Lenovo ThinkBook 16 G7 R7-7735HS/32GB/M.2 1TB SSD/16"FHD/SRB/3Y/21MW001MYA NB Lenovo ThinkBook 16 G7 R7-7735HS/32GB/M.2 1TB SSD/16"FHD/SRB/3Y/21MW001MYA
Šifra: DC41132
108.017,00 rsd
108.017,00 rsd
× Ranac POSO CB-8233, 15.6" crni Ranac POSO CB-8233, 15.6" crni
Šifra: 208372
4.158,17 rsd
4.158,17 rsd
× Web kamera Logitech C270 HD Black 960-001063 Web kamera Logitech C270 HD Black 960-001063
Šifra: DC15608
4.032,00 rsd
4.032,00 rsd
× Auto stalak SJ32 Auto stalak SJ32
Šifra: 211093
2.401,00 rsd
2.401,00 rsd
× Drzac za mobilni telefon sa LED rasvetom A22 pink Drzac za mobilni telefon sa LED rasvetom A22 pink
Šifra: 92204
1.214,47 rsd
1.214,47 rsd
× Torba za Laptop 15.6" M3 crna Torba za Laptop 15.6" M3 crna
Šifra: 47648
1.055,31 rsd
1.055,31 rsd
× tip c mikrofon Bežični mikrofon sa Tip C konektorom Remax
Šifra: 216814
2.150,00 rsd
2.150,00 rsd
× citac licne karte Čitač lične karte
Šifra: E7542
1.700,00 rsd
1.700,00 rsd
× Slušalice sa mirkofonom Sandberg USB+SJ Office 126-21 Slušalice sa mirkofonom Sandberg USB+SJ Office 126-21
Šifra: DC28801
4.161,00 rsd
4.161,00 rsd
× Slusalice Gaming Rapoo VH610 7.1 USB pink Slusalice Gaming Rapoo VH610 7.1 USB pink
Šifra: 86859
5.983,63 rsd
5.983,63 rsd
× SSD M.2 512GB KINGSTON 7000MBs/3900MBs SKC3000S/512G SSD M.2 512GB KINGSTON 7000MBs/3900MBs SKC3000S/512G
Šifra: DC26696
8.926,24 rsd
17.852,48 rsd
× Joypad Dual Shock WIFI za PS4 army zeleni Joypad Dual Shock WIFI za PS4 army zeleni
Šifra: 78538
4.089,34 rsd
4.089,34 rsd
× HDD WD 6TB WD6004FRYZ SATA 3.5 7200 256MB 24x7 GOLD HDD WD 6TB WD6004FRYZ SATA 3.5 7200 256MB 24x7 GOLD
Šifra: DC40141
30.357,53 rsd
30.357,53 rsd
× Vodootporna torbica EL1 6.5'' bela Vodootporna torbica EL1 6.5'' bela
Šifra: 201051
458,83 rsd
458,83 rsd
× LAN MK Intellinet 507950 PCI-E 1x10GbE LAN MK Intellinet 507950 PCI-E 1x10GbE
Šifra: DC44406
14.348,16 rsd
14.348,16 rsd
× Drzac za mobilni sa LED rasvetom makeup K5 pink Drzac za mobilni sa LED rasvetom makeup K5 pink
Šifra: 92209
1.218,89 rsd
1.218,89 rsd
× Joypad Dual Shock WIFI za PS4 zlatni Joypad Dual Shock WIFI za PS4 zlatni
Šifra: 78540
4.089,34 rsd
4.089,34 rsd
× CPU AM5 AMD Ryzen 7 7700X, 8C/16T, 4.50-5.40GHz 100-100000591WOF CPU AM5 AMD Ryzen 7 7700X, 8C/16T, 4.50-5.40GHz 100-100000591WOF
Šifra: DC27442
34.313,80 rsd
34.313,80 rsd
× vodootporna torba 30l Vodootporna torba Dry Bag 30L zelena
Šifra: m_F100732
2.217,00 rsd
2.217,00 rsd
× Miš Wireless Manhattan Performance III 190152, White Miš Wireless Manhattan Performance III 190152, White
Šifra: DC37934
1.475,00 rsd
1.475,00 rsd
× RAM DIMM DDR4 16GB 3200MHz SiliconPower SP016GBLFU320X02 RAM DIMM DDR4 16GB 3200MHz SiliconPower SP016GBLFU320X02
Šifra: DC23515
5.887,52 rsd
5.887,52 rsd
× Bluetooth zvucnik RGK-224 Bluetooth zvucnik RGK-224
Šifra: 99328
1.405,17 rsd
1.405,17 rsd
× Bluetooth slusalice REMAX Marshmallow Series TWS-19 bele Bluetooth slusalice REMAX Marshmallow Series TWS-19 bele
Šifra: 205254
2.844,76 rsd
2.844,76 rsd
× USB flash memorija Philips 2.0 128GB single port (FM30UA128S/93-L) USB flash memorija Philips 2.0 128GB single port (FM30UA128S/93-L)
Šifra: m_FM821
1.900,00 rsd
1.900,00 rsd
× Zvučnici HiFuture MusicBox 300 150W bluetooth + 2 mikrofona, crni Zvučnici HiFuture MusicBox 300 150W bluetooth + 2 mikrofona, crni
Šifra: DC45394
30.209,48 rsd
30.209,48 rsd
× CPU s1700 INTEL Core i9-14900F do 5.80GHz Tray CPU s1700 INTEL Core i9-14900F do 5.80GHz Tray
Šifra: DC40855
70.821,17 rsd
70.821,17 rsd
× vodootporna torbica za telefon Vodootporna torbica Squares-zlatna
Šifra: F108024
750,00 rsd
750,00 rsd
× podloga za mis Podloga za mis Fantech RGB Firefly MPR800S crna
Šifra: 65638
3.939,00 rsd
3.939,00 rsd
× USB data kabal Moxom MX-CB109 3A lightning 1m beli USB data kabal Moxom MX-CB109 3A lightning 1m beli
Šifra: m_U2059
639,00 rsd
639,00 rsd
× Auto stalak IPAD+BL za sediste Auto stalak IPAD+BL za sediste
Šifra: 81834
1.184,36 rsd
1.184,36 rsd
× Fractal Design HDD tray kit Type D, FD-A-TRAY-003 Fractal Design HDD tray kit Type D, FD-A-TRAY-003
Šifra: DC34316
1.423,60 rsd
1.423,60 rsd
× CPU Hladnjak Raptor Intel 65W TDP CPU Hladnjak Raptor Intel 65W TDP
Šifra: DC36923
565,68 rsd
565,68 rsd
× CPU S1200 INTEL Core i5-11400 6 cores 2.6GHz (4.4GHz) Tray CPU S1200 INTEL Core i5-11400 6 cores 2.6GHz (4.4GHz) Tray
Šifra: DC24353
14.728,30 rsd
14.728,30 rsd
× LAN MK TP-Link Archer TX50UH AX3000 WiFi/dual band/High Gain/USB LAN MK TP-Link Archer TX50UH AX3000 WiFi/dual band/High Gain/USB
Šifra: DC42631
8.576,67 rsd
8.576,67 rsd
× bluetooth slusalice sodo Bluetooth slusalice Sodo SY-BT2209 roze
Šifra: 213777
2.489,16 rsd
4.978,33 rsd
× Ubiquiti Access Point UAP-AC-PRO-EU 450 Mbps(2.4GHz) Ubiquiti Access Point UAP-AC-PRO-EU 450 Mbps(2.4GHz)
Šifra: DC22482
28.078,49 rsd
28.078,49 rsd
× Kućište Stars Solutions K01 500W Kućište Stars Solutions K01 500W
Šifra: DC20229
2.949,70 rsd
2.949,70 rsd
× Adapter USB3.0 - HDMI Adapter USB3.0 - HDMI
Šifra: H51041
1.605,17 rsd
1.605,17 rsd
× Bluetooth zvučnik HiFuture Mega S 5w srebrni Bluetooth zvučnik HiFuture Mega S 5w srebrni
Šifra: DC45387
4.178,98 rsd
4.178,98 rsd
× NB Lenovo Legion5 Pro i9-14900HX/16GB/1TB/16"/RTX5060 8GB/Win11Pro/83NN0019YA NB Lenovo Legion5 Pro i9-14900HX/16GB/1TB/16"/RTX5060 8GB/Win11Pro/83NN0019YA
Šifra: DC45833
231.465,00 rsd
231.465,00 rsd
× USB flash memorija Philips 3.0 128GB dual port type C (FLP FM30UC128S/93) USB flash memorija Philips 3.0 128GB dual port type C (FLP FM30UC128S/93)
Šifra: FM815
2.490,00 rsd
2.490,00 rsd
× mikrofon za snimanje telefonom Bežični mikrofon za snimanje telefonom sa magnetnim kačenjem i kutijicom Type C
Šifra: 222620
4.980,00 rsd
4.980,00 rsd
× Adapter Joyroom za slusalice i punjenje iPhone lightning crni Adapter Joyroom za slusalice i punjenje iPhone lightning crni
Šifra: 64247
458,83 rsd
458,83 rsd
× RAM DDR5 32GB (2x16GB) 6000MHz Kingston Fury Black RGB KF560C30BBAK2-32 RAM DDR5 32GB (2x16GB) 6000MHz Kingston Fury Black RGB KF560C30BBAK2-32
Šifra: DC39060
17.609,15 rsd
17.609,15 rsd
× CPU Hladnjak 1200/1700/AM4 Jonsbo HX4170D PWM/CRNI, HX4170D Black CPU Hladnjak 1200/1700/AM4 Jonsbo HX4170D PWM/CRNI, HX4170D Black
Šifra: DC42099
4.846,34 rsd
4.846,34 rsd
× Torba za laptop Casual EL 15" siva Torba za laptop Casual EL 15" siva
Šifra: 202887
2.081,95 rsd
2.081,95 rsd
× Konzola za igranje RG351P 64G Konzola za igranje RG351P 64G
Šifra: 207893
15.038,22 rsd
15.038,22 rsd
× Univerzalni desktop drzac sivi Univerzalni desktop drzac sivi
Šifra: 203873
2.844,76 rsd
2.844,76 rsd
× NB Lenovo IdeaPad Slim 3 15 i3-N305/8GB/M.2 512GB/15.6"FHD/2Y/SRB/82XB0090YA NB Lenovo IdeaPad Slim 3 15 i3-N305/8GB/M.2 512GB/15.6"FHD/2Y/SRB/82XB0090YA
Šifra: DC40773
43.622,25 rsd
43.622,25 rsd
× Set miš i tastatura bežični Fantech WK-895 crni Set miš i tastatura bežični Fantech WK-895 crni
Šifra: 208878
3.600,00 rsd
3.600,00 rsd
× eksterna baterija za telefon Power bank sa ugrađenim kablovima 10000 mah
Šifra: bat9374
2.425,00 rsd
2.425,00 rsd
× Micro SD Kingston 128GB Canvas Select Plus, SDCS2/128GBSP bez adaptera Micro SD Kingston 128GB Canvas Select Plus, SDCS2/128GBSP bez adaptera
Šifra: DC23779
1.618,20 rsd
1.618,20 rsd
× Kabl UTP CAT5 30m Kabl UTP CAT5 30m
Šifra: 81918
1.187,23 rsd
1.187,23 rsd
× HDD E2,5" Seagate 1TB usb 3.0 STKM1000400 HDD E2,5" Seagate 1TB usb 3.0 STKM1000400
Šifra: DC44131
8.666,00 rsd
8.666,00 rsd
× Tripod 3120A Tripod 3120A
Šifra: 60603
1.451,06 rsd
1.451,06 rsd
× Eksterni SSD Transcend TS512GESD310S 512GB USB3.2 Eksterni SSD Transcend TS512GESD310S 512GB USB3.2
Šifra: DC39379
6.426,00 rsd
6.426,00 rsd
× Miš Wireless Everest SM-BT19 Bluetooth beli Miš Wireless Everest SM-BT19 Bluetooth beli
Šifra: DC41215
3.339,00 rsd
3.339,00 rsd
× Memorijska kartica PHILIPS Micro SD 64GB V30 ULTRA SPEED (FM32TF064B/93) Memorijska kartica PHILIPS Micro SD 64GB V30 ULTRA SPEED (FM32TF064B/93)
Šifra: m_SD13764
1.290,00 rsd
1.290,00 rsd
× Access Point HP Aruba AP12 (RW) 3x3 11ac Wave2 Indoor R2X01A Access Point HP Aruba AP12 (RW) 3x3 11ac Wave2 Indoor R2X01A
Šifra: DC39809
16.699,85 rsd
16.699,85 rsd
× Napajanje 600W Raidmax Vortex RX-600AC-V 80PLUS White Napajanje 600W Raidmax Vortex RX-600AC-V 80PLUS White
Šifra: DC30016
5.910,30 rsd
5.910,30 rsd
× Kabl UTP CAT7 10m crni JWD-C5 Kabl UTP CAT7 10m crni JWD-C5
Šifra: 85475
2.208,14 rsd
2.208,14 rsd
× RAM DDR4 ECC UDIMM Micron 8GB 3200MHz MTA9ASF1G72AZ-3G2E2ZI Bulk RAM DDR4 ECC UDIMM Micron 8GB 3200MHz MTA9ASF1G72AZ-3G2E2ZI Bulk
Šifra: DC24657
6.647,20 rsd
6.647,20 rsd
× Kućište Stars Solutions K04 2xUSB 2.0, NO PSU Kućište Stars Solutions K04 2xUSB 2.0, NO PSU
Šifra: DC30229
1.899,61 rsd
1.899,61 rsd
× HDD E2.5" Transcend 1TB USB 3.1 TS1TSJ25C3S slim Anti-shock Iron grey HDD E2.5" Transcend 1TB USB 3.1 TS1TSJ25C3S slim Anti-shock Iron grey
Šifra: DC44752
10.066,00 rsd
10.066,00 rsd
× eksterna baterija power bank Power bank Remax 20000 mAh sa brzim punjenjem
Šifra: BAT9413
2.985,00 rsd
2.985,00 rsd
× Podloga za miša Fantech Mp44 Sven 440x350mm crna Podloga za miša Fantech Mp44 Sven 440x350mm crna
Šifra: DC44689
1.584,00 rsd
1.584,00 rsd
× Kabl UTP Cat5e 5m sivi Kabl UTP Cat5e 5m sivi
Šifra: 68230
504,72 rsd
504,72 rsd
× Eksterni (Portable) 17.3 ekran A1M Eksterni (Portable) 17.3 ekran A1M
Šifra: BC111006
23.807,00 rsd
23.807,00 rsd
× RAM DDR5 32GB (2x16GB) 6000MHz Kingston Fury RGB EXPO KF560C36BBE2AK2-32 RAM DDR5 32GB (2x16GB) 6000MHz Kingston Fury RGB EXPO KF560C36BBE2AK2-32
Šifra: DC39055
17.876,22 rsd
17.876,22 rsd
× Slusalice REMAX RM-711 crna Slusalice REMAX RM-711 crna
Šifra: 204486
1.305,95 rsd
1.305,95 rsd
× Thermaltake Versa XM1/Black/Win/Left Steel Panel*1/120mm Fan*1/CA-1Z6-00M1WN-01 Thermaltake Versa XM1/Black/Win/Left Steel Panel*1/120mm Fan*1/CA-1Z6-00M1WN-01
Šifra: DC44558
4.703,95 rsd
4.703,95 rsd
× USB 3.0 HUB 7 porta LWD HQ sivi USB 3.0 HUB 7 porta LWD HQ sivi
Šifra: 210392
4.158,17 rsd
4.158,17 rsd
× Smart Rugged Oscal PILOT I , 6.67" OC/6GB/256GB/50MP/15000mAh 33W Black Smart Rugged Oscal PILOT I , 6.67" OC/6GB/256GB/50MP/15000mAh 33W Black
Šifra: DC40864
28.484,45 rsd
28.484,45 rsd
× TOWER LC POWER LC-2014MB 2xUSB2.0 1xUSB3.0 TOWER LC POWER LC-2014MB 2xUSB2.0 1xUSB3.0
Šifra: DC21036
3.505,92 rsd
3.505,92 rsd
× Stabilizator Gimbal Ogawa XE crni Stabilizator Gimbal Ogawa XE crni
Šifra: 213974
13.076,71 rsd
13.076,71 rsd
× Mis Acer OMW110 crni Mis Acer OMW110 crni
Šifra: 202911
3.200,35 rsd
3.200,35 rsd
× Bluetooth adapter Sandberg 5.3 Dongle 134-34 Bluetooth adapter Sandberg 5.3 Dongle 134-34
Šifra: DC30102
3.058,00 rsd
3.058,00 rsd
× Joypad Dual Shock WIFI za PS4 tamno plavi Joypad Dual Shock WIFI za PS4 tamno plavi
Šifra: 94036
4.089,34 rsd
4.089,34 rsd
× kabl za punjenje type C na type C 100W Kabl za punjenje Type C za MacBook
Šifra: H92174-1
1.300,00 rsd
1.300,00 rsd
× NB HP Probook 450 G10 i7-1355U/16GB/1TB/15.6 FHD IPS/FPR/ENG/Win11Pro/968W5ET NB HP Probook 450 G10 i7-1355U/16GB/1TB/15.6 FHD IPS/FPR/ENG/Win11Pro/968W5ET
Šifra: DC45091
113.087,00 rsd
113.087,00 rsd
× USB mini kabl Gembird USB 2.0 mini kabl 30cm tip A na tip Mini
Šifra: H5918
250,00 rsd
250,00 rsd
× brzi auto punjac za telefon Auto punjač za telefon brzi sa 2 Tip C izlaza+USB
Šifra: A709
2.150,00 rsd
2.150,00 rsd
× NB Lenovo ThinkBook 16 G8 Core7-240H/32GB/M.2 512GB/16"/FP/BL/SRB/3Y/21SH008BYA NB Lenovo ThinkBook 16 G8 Core7-240H/32GB/M.2 512GB/16"/FP/BL/SRB/3Y/21SH008BYA
Šifra: DC45370
103.031,60 rsd
103.031,60 rsd
× Slušalice sa mikrofonom Manhattan Classic 175555, black Slušalice sa mikrofonom Manhattan Classic 175555, black
Šifra: DC37911
2.475,03 rsd
2.475,03 rsd
× Zvucnici 2.1 Logitech Z407 Bluetooth 980-001348 Zvucnici 2.1 Logitech Z407 Bluetooth 980-001348
Šifra: DC26370
18.544,00 rsd
18.544,00 rsd
× Web kamera Logitech Brio 505 960-001459 Web kamera Logitech Brio 505 960-001459
Šifra: DC35143
18.384,02 rsd
18.384,02 rsd
× Napajanje Raptor 600W Element Silver/12cmFan/BULK, RE-600H12 Napajanje Raptor 600W Element Silver/12cmFan/BULK, RE-600H12
Šifra: DC38890
2.375,69 rsd
2.375,69 rsd
× Torba za laptop Elegance EL 14" crna Torba za laptop Elegance EL 14" crna
Šifra: 202890
2.489,16 rsd
2.489,16 rsd
× Drzac za mobilni telefon K316 sa LED lampom 2u1 Drzac za mobilni telefon K316 sa LED lampom 2u1
Šifra: 91055
1.624,88 rsd
1.624,88 rsd
× vodootporna torba 10l roze Vodootporna torba Dry Bag 10L pink
Šifra: m_F108008
1.596,00 rsd
1.596,00 rsd
× Kompresovani vazduh 400ml Kompresovani vazduh 400ml
Šifra: ef4424
399,00 rsd
399,00 rsd
× Mis gejmerski zicni FANTECH VX7 CRYPTO sakura edition Mis gejmerski zicni FANTECH VX7 CRYPTO sakura edition
Šifra: 88812
2.814,05 rsd
2.814,05 rsd
× Kućište Fractal Design Focus 2 RGB Black TG Clear Tint, FD-C-FOC2A-03 Kućište Fractal Design Focus 2 RGB Black TG Clear Tint, FD-C-FOC2A-03
Šifra: DC33893
10.624,68 rsd
10.624,68 rsd
× Adapter Type C na HDMI M 4K 60Hz sivi Adapter Type C na HDMI M 4K 60Hz sivi
Šifra: 98333
1.892,68 rsd
1.892,68 rsd
× Kuciste Raidmax Talos window/White, 4x 120mm FRGB/650W/RT650RGBW Kuciste Raidmax Talos window/White, 4x 120mm FRGB/650W/RT650RGBW
Šifra: DC35265
8.225,91 rsd
8.225,91 rsd
× LED selfie stipaljka pink LED selfie stipaljka pink
Šifra: 212766
1.135,61 rsd
1.135,61 rsd
× Napajanje Raptor 420W Office Series 12cm fan/80plus, RC420H-12 Napajanje Raptor 420W Office Series 12cm fan/80plus, RC420H-12
Šifra: DC37629
3.088,92 rsd
3.088,92 rsd
× Slušalice sa mikrofonom Logitech Headset PC960 USB 981-000100 Slušalice sa mikrofonom Logitech Headset PC960 USB 981-000100
Šifra: DC14821
4.398,48 rsd
4.398,48 rsd
× adapter type c na usb Adapter Type C na USB LDNIO sivi
Šifra: 99409
880,00 rsd
1.760,00 rsd
× CPU s1200 INTEL Celeron G5905 2-Core 3.5GHz Tray CPU s1200 INTEL Celeron G5905 2-Core 3.5GHz Tray
Šifra: DC25345
4.647,89 rsd
4.647,89 rsd
× OTG kabl Type C beli OTG kabl Type C beli
Šifra: 95353
642,36 rsd
642,36 rsd

Ukupna vrednost korpe

Ukupno 1.431.511,92 rsd
Dostava Troškovi isporuke obračunavaju se tokom plaćanja.
Ukupno 1.431.511,92 rsd